It's not just because I heard them first -- it's because they're generally better than the originals, IMO. Except maybe for "You've Really Got A Hold On Me" -- I really love the Smokey Robinson version of that.
Mott turned Lou Reed/Velvet Underground's classic into a rock anthem. Recorded at the 40th anniversary show (shortly after Ian hunter celebrated his 70th birthday!)
I've been a Mott The Hoople fan since the very beginning. And I had the privilege to attend their London reunion concerts in October 2009. They played 5 nights in a row. The band was in excellent shape.