Had mechanical reverse in both my 2000 Cats. Worked well, but added weight. The e-reverse that I have on my '04 Polaris is real sweet!!! No extra weight, and works very well.
2004 Polaris Trail RMK 136
1997 Ski Doo Summit 500
2000 Arctic Cat ZL550 ESR (in NY)
2000 Arctic Cat 440 Panther (sold)
1980 Arctic Cat Jag 3000 F/C (in NY)
"If it ain't broke, take it apart and find out why!"