Micro Registration is great, but if the press is flimsy, it won't mean anything. Micro reg. is only going to help you line up the screens to your artwork, not hold registration while you print.
If you're looking for a table top size printer, check out the Odyssey:
http://www.workhorseproducts.com/pro...tabletop.shtml
Or the CAPS Table top:
http://caps-screenprinting.com/t-shirts.asp
These are both serious presses. They will hold fantastic registration. And often you can find used ones for $500-$1000
Go over to screenprinters.net and join the forums. They are a bunch of very knowledgable people who will guide you in the right direction.