I have the RIGID vac that zymolKK is referring to (16 Gallon, 6.5 HP with free Stinger 2.5 HP - see it here:
http://www.homedepot.com/prel80/HDU...ID=cccfadddmlhgdmgcgelceffdfgidgng.0&MID=9876) I got it shortly after christmas. THis is the first Shop Vac I have owned so I can tell you how it works in comparision to others but here is my take on it.
I used the 6.5 version the first few times on my vehicles and it worked great. It was a little bulky and was difficult to get under and between the seats. I also used it to clean up all the dog hair and dirt that accumulates in my garage. After about 8 times of use, the suction on it dimished significantly. I cleaned the filter and it helped a little but still not like it was new. I believe the filter actually needs to be replaced. I now just use it to keep my garage clean.
In the mean time, I have started to use the Stinger for vacuuming the cars and for as small as it is, it works just as well as the 6.5 HP and the hose is small enough that I can use my attachements from my hosuehold vacumm with it. The only probelm I have with it is the hose. It is kind of short and will come undoen form the vacuum when you really try to reach with it. It also seems not that flexible. I have not yet tried to use it as a wet vac so I cannot comment on that.
Overall, I am pleased, especially since i wa able to get it on sale for $69 - a 50 gift card I received. Iam sure there are better ones out there but for the price and for my use, it was the right way to go.
Oh yeah, one last thing, I had some probelms putting the casters on the 6.5 and had to drill the holes out a little bigger.
Thanks,
Gary