Edge was probably 'very good' through some parts of 05-06. I definitely don't think he was a great character, though. Before the 05 Rumble he speared Michaels backstage and started pulling his own and squinting his eyes and curving his mouth and it wad the most embarrassing thing I have ever watched that wasn't 2010-2011 Edge. I should re-watch the 02 Angle matches because I've always liked them.
The Rated RKO/DX tag at Cyber Sunday stinks and I couldn't finish on my last two watches. NYR is a good one, though. I've never really like Cena/Edge either but it's probably been 2007 since I last watched their TLC.
Tbf I didn't watch all his run in that time, so whilst I expected some of his 'acting' to let him down I was speaking more from his 05 heel turn and then slowly gaining mega heat in the Hardy program and then cashing in on Cena. Felt like a breath of fresh air and he was a great slimeball/douchebag character. It definitely ran its course though and I wouldn't at all be surprised if I grew to dislike the character if I went back and watched a lot more promos and segments from that portion of his career.
Actually forgot to say one of his most impressive performance is actually at Summerslam 2005. I know people crap on the match since it makes Hardy look weak (though personally I think its a great way to advance the feud), but Edge's punches, kicks and headbutts were really good in the match which shocked me because he's never been a guy I'd point to as thriving in that sort of environment. Of course Hardy's a sublime seller and he really makes the kicks and overall beating look truly emphatic, but I couldn't find fault with anything Edge did in that match.
I probably should give him more credit for the Flair TLC match, especially the way they timed the spots to tease the upset. But I still think Flair and his underdog veteran performance carries a lot of the emotional investment in the match, same way Lawler is responsible for a lot of what made the Miz TLC enjoyable.
The Cena/Edge TLC just isn't my cup of tea anymore. Just feels generally like an excessive prop war and compare it to something like Sheamus/Morrison as an individual gimmick match where ladders are the main theme, and I can't see how its better. I admit the Cena hate probably made it engrossing on live viewing, but its not really a match that ages well and just feels like its a collection of ladder/table spots. The LMS from Backlash 09 is much in the same vein. Doesn't feel as heated and personal as a feud ender should be, and the reliance on impressive visual spots just feels lazy. FU into the crowd did catch me off guard however.