Mate I own the Honda you have on your short list. I use it mainly for camping here in Australia. It is a great unit, supper quiet and fuel economy is great. Really basic to service. Bit on the pricey side, but you get what you pay for.
Sets by far are the best way to purchase these types of tools. When it comes to more specialized tools, individual purchases might be the way to go. I'm a professional tool ******* so use nearly everything within the sets. But even if I wasn't, I would still buy sets. You never know when you...
Buy what ever you like. Either way you should be using hearing protection with most pneumatic tools.
Personally I would go for the most torque, and wear hearing pro.
I will start by saying welcome. Now onto your question, I swing wrenches for a living and when it comes to screw drivers you don't have to brake the bank. In my tool box you will find drivers from all different brands. They all work fine and I don't favour one over another. That being said I do...