You don't need two, let alone three, you need one that's had all the kinks worked out, keep an eye on it, and be proactive when something's not right. That'll get the typical rider through a season four out of five times. Now, if you mean not losing a day of riding to a broken sled, ever, then have two backups no matter what you ride. Better have a second truck in that case too. Unfortunately, Polaris has done a good job of putting their best foot forward and shooting it the last couple seasons. I feel bad for anyone who sold their sled, rolled the dice, and got burned on the series 8 last year or the boost this year, but I don't know of any long-time Polaris rider who'd call that a real surprise. On the other hand, if you stick to what's worked for a season or two already, you should be fine. There are several '22 Poos I wouldn't shy away from.