Our other 12 volt inflator aside from the lower volume Bravo MB80 is the Hurricane. This unit blows a slightly higher volume of air than the Bravo, and at higher pressure - 1.5 p.s.i. to 1.8 p.s.i. depending on your boat's valves. This means you won't have to do much topping off at all. There is one other pump that does as well pressure-wise, and blows even more air. That would be the LVM, but the LVM has shown to be less than reliable over the many years it's been on the market. It also costs nearly double what the Hurricane goes for.
This pump stands up by itself, and comes with four adapters, including one that seems to work for about 80% of the valves out there. The hose is a bit too short for many applications. Your local hardware store sells various (spa & Tygon) tubing by the foot in the rope & chain section, so you can retrofit the Hurricane with something longer if you wish. A 5' piece of garden hose also works well. The Hurricane uses battery connectors for under your hood, not a cigarette lighter plug. We realize that it is getting harder to even find the battery on many newer cars, but the connection is stronger with battery clamps compared to the often unreliable lighter jacks.