I have a 16 gal Rigid wet/dri vac for my shop and for larger jobs. The motor is removable and can be used to blow out the garage (lazy-man's broom) and gutters.
For smaller jobs where easier portability is desired, I also have an 8 gal QSP wet-dri vac.
Even though QSP claims to be quieter, I usually use ear protection while using either vac, especially indoors.

I also have the Rigid wet/dry model. It has the same feature where you can remove the Motor and convert it to a blower. I use mine all the time and I'd buy one again. When I bought mine,2 yrs ago,it was about $150.00 @ Homeboy Depot. If you decide on the Rigid, do yourself a favor and get 1 or 2 of the Hepa type filters. Thier top of line one allows you too vacuum up super fine particles. Although I have yet to try it, they claim you can vacuum out a Fireplace and the filter will not allow any ash to pass through the material.

Walmart had 10 Gallon Shop-vacs with the built in water pump for $79.00 which is about half price of what you find it for on the web. I bought 2 - 1 for me and 1 for parents who's house has a flooding problem. They had a flood about 1.5 months ago and the water pump feature did work as advertised: You hook up a garden hose, stick it out a window and as the water is sucked off the floor, it is then pumped out the window- no emptying of the buckets every few min. I originally bought them a rigid but It was missing many features that come with shopvac. Not only did it NOT have the pump, it didn't even have a drain at the bottom of the tank, so you had to take off the lid, move the drain to the edge of the door and tip it over- NOT EASY full of 10 gall of water if you are elderly. It also had a smaller hose than the shop-vac..the shop-vac is 2.5 vs 1** for the rigid, normally not big deal but I use mine for leaf collection and it does not clog as easy. It was also missing the blower feature-mine can be used in blower mode to clean leaves off my gutter screens,etc. I have not tried this yet so I can't say how well it works but at least I have it when fall comes around. To be fair their rigid works well as a basic vac, just missing LOTS of the features that my shop vac has.

HD's Rigid and some Craftsman units tested well in Consumer Reports. I have a 12 Gallon Rigid, the standard line, not the newer top line, and it works well, a lot of suction.