Obviously this is all subjective but imo Venus part 1 and Blaze are the best videos hands down. Although maybe it's just because I found those the most inspiring and "grew up" with them while I was learning to edit. There have been lots of tf2 editors throughout it's history but I've always felt Goo and Uil in particular have both got this really iconic nature that nobody has been able to replicate. This is true for Nick as well but obviously his iconic style is very different and further separated from the traditional idea of a fragvid.
Sorry for rambling, love these discussions though.