Q Industries MV50 SuperFlow Air Compressor $46 at Amazon

I have a suspicion that this looks better then it really is... Do we have any vouchers for this thing?

I've had mine for about a year and am quite impressed with it. Well worth $46.

Good price, normally $55 on sale and up.

I've had one for at least 2 or 3 years. It's a slight annoyance you have to pop the hood to connect directly to the car (or other) battery instead of using a lighter outlet, but it pumps so much faster than smaller pumps that you still save time unless your battery terminals are buried away - most cars designed with a hard to access battery still have a positive terminal where you can easily access it.

Unlike smaller pumps you can completely inflate 4 (normal sized) tires without it getting really hot, it's about as good as it gets till you look at the $100+ range pumps, or an equivalent price benchtop air compressor which usually needs a wall outlet and is significantly bulkier and heavier.

I wish the power cord were a bit longer, inflating the far rear tire will mean the pump is towards the front of the vehicle and the air hose stretched to the back, but the hose is plenty long enough for even a long bed pickup truck. It's 16 ft. but due to the stiff design and that it's permanently coiled for easy storage, the usable length of the hose is closer to 10'. This is more of a "I wish" to make it better, lots of other pumps have the same issue.

Beyond that I'd buy it again, though a tip for use: Unless you're only putting a couple PSI in, the air is warm and the gauge reads about 3 PSI high due to the longish air hose, so if monitoring the pressure on the built in gauge, inflate to around 4 to 5 PSI higher than your target inflation #, or turn off the pump to see a more accurate PSI reading, then after ~ 30 minutes the tire pressure will have settled down to where it should be as the air cools.

This is another issue common to all smallish/portable air compressors, but the gauge is off slightly more while its running due to it having a longer than average hose.

If you instead want about the most powerful pump that you can plug into a lighter outlet, there's this smaller version for…

Course there's this one too that is more powerful:

Master Flow MF-1050 Tsunami High Volume Portable Air Compressor
http://www.amazon.com/Master-Flow-MF-1050-Portable-Compressor/dp/B000L9AD2U

^ That's actually the same compressor except the valve in it is upgraded. Maybe I should say, it's identical except a newer model with that one change. If you need over 100 PSI, that may make it worthwhile but otherwise until it goes on sale I can't see spending the extra $23 for it.

I dunno, Dave. I would think the design difference is to supply a bigger volume of pressurized air (faster) rather than proving a higher pressure (PSI) with the more expensive model. I could see the need for a different valve design but I would think the major difference would be having the second cylinder and how the second cylinder works with the first: in parallel (higher pressure) or series (higher volume) with the first.

Feature:

Dual cylinder/piston for 4x4 applications
Max. 150 PSI

I would assume it is designed for parallel (higher volume) operation.

^ That's a listing error, this is their dual cylinder/piston model - http://www.amazon.com/Industries-MF1089-MasterFlow-Twin-Compressor/dp/B000L9D8LI

Those who own both the MF-1050 and MV-50 have confirmed they look identical (dual cylinder design would have a 2nd head like the one I linked) and inflate at the same rate doing both sides of a vehicle simultaneously.

They even call it High Volume compressor. That's more then a listing error, that's downright false information.

http://www.yotatech.com/f31/masterflow-superflow-air-compressor-mf-1050-mv-50-a-64004/

IMO, it's fair to call it a high volume compressor since it is relative to other compressors which typically plug into a lighter outlet, and since the MV-50 is also called high volume.

The MF-1050 is a little cheaper, $60 rather than $69 at PepBoys though then there may be sales tax involved and/or shipping.
http://www.pepboys.com/product/details/9357343/00259/

Dave, I tried to cancel the bogus two pump model on Amazon. I had it with Super Saving Shipping. Of course they can't cancel it even if they plan on letting it sit in a warehouse somewhere before actually shipping it to me for the punishment for not paying for their Prime Club BS.

That's fine, I'll refuse to package if I can. This should be entirely on their dime since the listing is deceptive...

^ Be sure to take some screenshots, the listing might magically fix itself.

I bought a Viair 00073 70P Heavy Duty Portable Compressor a couple of weeks ago. Pretty decent reviews.

http://www.amazon.com/Viair-00073-Heavy-Portable-Compressor/dp/B0012WHBSO/ref=pd_sbs_auto_1

Will do #11. Thanx. Check this out:

http://www.pcmag.com/article2/0,2817,2413305,00.asp

Looks like great reviews, #12. Hope it works out well for you.