Nirena:
Are you carving? I'm guessing that you are, since you had some rust issues.
I have gone through 3 Dremels; the switches give out. I half-killed a Grobet, which is really similar to a Foredom. The motor only runs at half speed. It lasted about 4 years, the Dremels lasted a year or so.
I've been using a 2 Foredoms for about 2 years each, so the jury is still out. I have the hammer piece, but haven't really used it much. I made a graver head for it and used it as an engraver some, but I had more control doing it by hand so abandoned the idea. I haven't tried it to bezel set yet.
That's a great price on the quick change handpiece, but I notice that it seemed to be almost as large as the standard handpiece. I don't have particularly small hands for a woman, but those larger handpieces are obviously designed for larger hands. When I carve, I'll carve for hours, and the big handpieces made me have horrible cramps after a while.
Wecheer makes a slim handpiece
http://www.woodcraft.com/product/147228/wecheer-detail-handpiece.aspx#REVIEWS as does Foredom
https://www.riogrande.com/Product/Foredom-H28-Slimline-Handpiece/117591. Your Dremel collets will work in both. I don't have the Foredom slim handpiece, but I do have 2 of the Wecheer and I think they're great. Much less fatigue and they run true.
If you look on this page
https://www.riogrande.com/search/go?w=foredom+handpiece you'll see that they have a quick change slim handpiece, but it has the same length as the hammer handpiece. The length makes the handpiece hard to maneuver and awkward to work with.
Just something to think about. I wish they had the small, slim one with a quick change feature.
If you are using the Foredom or Foredom clone for jewelry polishing and the sort, it's likely that your machine will last a lot longer than mine did. I put a lot of wear, tear and hours on mine. Be smart, buy the Foredom lubricant when you get the one of your choice and get in the habit of cleaning and lubing the shaft. It's dirty but easy and will add years to the life of the shaft and machine, even a Dremel. I've known folks that have never cleaned or lubed their flexshafts and then wonder why it makes that horrible noise. It's recommended that you do it after 40 hours of use. It takes about 5 minutes, and if you need help, post here or message me. I check in every few days.
Debbie
PS: You absolutely want the foot pedal!