All down to personal taste but Backlash 2000 and Judgement Day 2000 were two blinding PPV's in a row. KOTR after that was a huge let down, and WM2000 prior was a let down also, despite the amazing triangle ladder match and the main event had its moments. The card did have a big time feel however, so you could argue that April - June period.
Summerslam 95 is still one of my favourite WWF PPV's, followed by a wonderful Survivor Series with the wild card match, strong undercard and the blinding Diesel / Hart match. Then we had Royal Rumble 96 with a strong Undertaker / Bret match, star packed Rumble and Goldust and Razor going at it.