[jason701802]

They're pretty good, but a cheaper and often stronger solution (that has no lead time) is to get a old cordless drill that uses the same size motor (775 in your case) and just do a drop-in replacement of the stock motor. People have been using Dewalt drills like this for years, even running CIMs through them (there's also a white paper detailing the required modifications), and last year we used the transmission from an old Milwaukee that we got at a used tool store for $30 or $40 and never had a problem. Some drills also have an anti-backdrive mechanism, which can be useful. The hardest part is mounting the transmission, but there are a lot of possibilities.