i have two corded dremel's and a cordless harbor freight, all work awesome and are very useful. Shop around for the dremel kit, i compared amazon vs walmart vs several others and walmart ended winning out, was a little surprised at that.
EVERYMAN should own a dremel, I don't use mine everyday or even every month but when I do its a lifesaver.
Dremel brand has gone down hill thought the last 10 years, they cant seem to make a switch that lasts for [censored] ! I have several dremel tools but I seem to use my craftsman brand rotary tool more than the dremel, and a Roto-Zip for all bigger stuff.
Our got the most use cutting dozens of holes in drywall for the house. But every couple months there is a tight or delicate cutting job that only the dremel can do.
It is 100W or less, so its no angle grinder with 1hp+. But a 4.5" disc doesn't fit in a lot of places either.
I have a variable speed Ryobi that I have had for years. Great tool for small stuff.
However, I also have a Zip saw and an oscillating tool for larger and more demanding jobs. It is about the right tool for the purpose.