do some research on Ats, Dtt, Suncoast, Goerend.....
i'm sure u'll find some great information if you'll just take 1 to 2 hours and search through the forum.
When you find a particular brand you're interested in make the call see what kind of customer service they have, warranty, product line, tech support. Run each salesman through the woodwork the way you would do a car salesman.
Search option on this site is very useful, use it to your advantage.
See my signature for my personal preference, but keep in mind they all have a great product.
I-6DZL