Agreed.
I've ridden different brands from the 70s up to the brand new modern stuff. Small sleds, big sleds etc. My last sled was an 04 MXZ 800X that was far from stock. I hardly rode last year because even up here it was an awefull winter. Insurance, I was around $300 a year. But, parts cost (I do all my own work) when you ride hard and fast. Since it was my off season from motocross, I treated the sled like a MX bike which is why it was so custom. With gas in the sled and in the truck (even up here I would from time to time trailer to a spot to meet up with a group), good oil, trail side lunch etc I would easily spend $500 in a weekend. It didn't help that I'm either to the bar or on the brakes when I ride and my sled was a carb sled, so I could barely get 100km for a $60 tank of premimum when I was having fun, and we could do 300km days pretty easy around here when I was riding with my fast buddies.
If you get in with a group of guys that are capable, aggressive riders, you will have a very hard time keeping up on anything less than an older REV style sled or the other brands from 06ish and up.
Part of the reason I stopped sledding is safety. I have to ride way too dang fast to get a thrill on it now (been riding close to 20 years). And while I stick to my side of the trail and don't out ride my limits, there are a lot of people out on these sleds that are way too capable and too fast for their abilitiy. Cutting apexes of corners in to the oncoming side of the trail, not sticking to your side of the trail on the crests of hills, people passing like idiots in rediculous places etc (I sometimes ride slow when on group rides). It's just not worth it. When I'm coming around a corner at 100, leaned right over with the inside ski off the ground and some idiot comes from the other direction, out of control, sideways across the trail... I would rather be jumping doubles bar to bar on the MX bike knowing the guy beside me has some skill, instead of facing the citiots on rental sleds in muskoka without a clue coming from the other direction.
That said, I'm hopefully going to get a Squadron green Renegade 800 in the next couple of years so I can sled again, only from now on I'll be off trail having fun in the hills.
For the older sleds, the 583 R.A.V.E. engines were as previously stated, bullet proof. We had a 99 MachZ 800 with lots of motor and clutch work and that thing hauled in a straight line on cold nights... Almost too fast for a 17 year old kid.
I love sledding, but it was becoming more stress than fun.