The first option for me, is to use the air tools because they are fast and small enough to get into tight places. My next line of attack, is to use my 1/4 or 1/8 inch electric dye grinders. My tool of last resort, is the Dremel. I find that they are all indispensable and I couldn't do without any of them. I have found that the Dremel is very handy as a cut off tool in very tight places. It requires a light touch and patience, but I have saved a lot of expensive parts doing surgery with a Dremel. Two of the handiest attachments I have purchased for the Dremel, is the 90 degree angle attachment and the flex cable extension. I have acquired my tools over a lifetime, and I have always been able to do the job with what I had available, having the exact tool I need just means that I have spoiled myself rotten. Billy Jean King said it best in the old SnapOn commercial in 1970, " Every man needs a good tool".
Bob