I recently purchased a Wheeler 43 piece gunsmithing screwdriver set and it's great, the handle is comfortable to use and there is a huge selection of bits that cover pretty much all situations.  However, there is an issue that I found out the hard way - the hex bits are imperial which doesn't suit a lot of what I do.

Maybe the bigger set has metric as well, but I'll try to find some compatible bits to suit what I have.  Just a heads up for anyone who may be looking to buy one of these kit or anything similar.