I owned a 630 for about 5 years and only put in air and fuel filters so far.
I bought a 802 maybe 18 months back and really like it a lot. The only problem is someone left it behind my truck and I ran over the end tube. Anyone know where to get a end tube for it? It seems like parts are a bit harder to find.
I also run a rm 7150 no problems, rm 8000 scored cylinder and piston, and a br420 (floods, muffler needs cleaning seasonally). I got to say the shindys are my favorite because of reliability.