Buying a serger: brand? features? advice?

I edged a bunch of flannel blankets recently using the "serger stitch" on my regular sewing machine... that worked OK, but I'm thinking that a real serger would do a better job and be much faster.

With a new baby, I think there will be more blankets and the like in my future (especially now that my sewing machine is uncovered again). I'll probably be using it more for edging than for finishing seams, but who knows, maybe I will start getting ambitious and move beyond straight-line sewing. LOL

What features should I look for? Are there brands that are especially good?

I'd really appreciate any advice, recommendations, links, etc.

THANKS!