Here are some of the brands that are considered best:
Jenn Air
Ducane
Weber
As to whether you should go that way, I would say that if you have an interest in it you will probably find it useful to you. I don't have one but I've been to BBQs where they were used and they really do a good job of cooking poultry well, and other things, too, I imagine. And they're not that much more expensive than a regular grill, so I would say go for it.
Right now, the most popular one at Home Depot is this one:
Stainless Steel 48,000 BTUs 4 Burner with Rotisserie
Model 810-7440-S
Price: $369.00/ea
http://www.homedepot.com/prel80/HDUS/EN_US/diy_main/pg_diy.jsp?CNTTYPE=PROD_META&CNTKEY=misc%2fsearchResults.jsp&BV_SessionID=@@@@1925645513.1175542200@@@@&BV_EngineID=ccdeaddkiidflmgcgelceffdfgidgmm.0&MID=9876They also have rotisserie baskets for some Weber grills. I don't see Jenn Air there online, but if you can find one somewhere else, this one is highly rated, too:
Jenn-Air Gas Grill JA480P
I hope this helps!!
