I like metro, marathon because they are beautiful and more inexpensive. I have also used sulky and gutter man with good results.

I have used quite a few different brands on my MC10000. Some I already had, some I've bought since getting the machine and a lot came with the machine. Black is the only color I've ever had any issue with and that includes RA. I have also found when I get near the end of a spool I can have some issues. All in all though I don't have many problems but I sure have a lot of fun. You will too. Have a good look around the internet before spending a fortune on designs. I like Embroidery Library and Adorable Applique but have picked up a lot of free designs that have worked wonderfully. Bunnycups is also a good site and they give their retired sets free.
You are about to embark on a wonderful journey. Enjoy.

I use Maderia and Floriani. Since Floriani is polyester it will hold up better than the rayon. I also use DMC cotton embroidery thread. Hard to find but like if also.

Sulky is rayon and
I prefer poly like Isacord. Poly is colorfast in the wash using Clorox and rayon isn't. Very important on items that will be used and washed often!

I prefer polyester, it is strong, doesn't shrink or fade either :) :) :)

I like Madeira and Robison Anton the best...I don't have shredding problems with them...Sulky and my Machine really don't see eye to eye...
I prefer the polyester in both brands because they are more washable....

I agree what someone else suggested and find out what your machine likes best..otherwise you will waste money. I have tried some of the better threads and my machine doesn't like them.. Good luck! Fun Fun Fun!

congrats on the great deal you found

robinson anson is my favorite i have a pfaff--if you use cotton for FSL clean out your bobbin frequently

I use Floriani and Isacord. Floriani is more has more shine to it. Isacord is very pretty and strong. Use some Madeira which seems to fray more in my Brother machines but looks really pretty.