I have the Husqvarna Topaz 20 - it was a floor model so I got a great discount and I love it. It has the the hoop larger than a 5 x 7, not sure but think it is 8 by 12 ( 200mm by 260mm). Anyway, it came with the same warranty as new, and I am considering getting the hoop with the magnets. It also came with the 4 x 4 hoop and you can buy a smaller hoop (not sure why I would want a smaller one - but it is available). I do wish that I had access to Disney - which is legally only available to Brother machines. My friend got the Brother PE 770 so she will let me use it and I let her use mine when needed.
So go on the various embroidery websites and see what options you have and go check out the various machines. I really do suggest if you think all you want is 4 x 4 then upgrade to 5 x 7 because it takes very little time before those designs call your name. And those t-shirts and blouses and table runners and Irish Chain blocks and on and on that would be just perfect with that one design.
And the thread - there are so many beautiful colors..... I am still learning about stabilizers and the best way to use them. So go and talk with the shops and see what you like best.