I was introduced to GL with Rebirth so to me it's just not right unless Hal, John, Guy and Kyle are all GLs. I've read a good bit of Kyle and Hal era stuff as well.
Kyle back when he was the one and only bugged me, really whiney and he looked ridiculous. Now he's not as whiney and more secure as a GL I really like him.
Hal was a bit blah before Paralax, but really worked as a bad guy.
John's cool but severly under used compared to the others.
Guy used to piss me off especially when he was using sinestro's ring, but I find him really funny now.
Alan I don't associate with the rest of the GLs, I more associate him with the JSA. I've always liked him, but I hate his look the sentinel look wasn't much better either.
On another note Blackest night was a brilliant crossover event that Final crisis should have been.