Vermeer 504G vs. Claas 62

Rollers do break over time if you run a lot of stone through it. At the same time, it does keep going through the rocks where the others will want some parts right away. Your choice on that one....
Do watch the rollers for condition. Check the cylinders also. They need to hold tight to maintain bale density. Chains are the other big thing. If it's got chink chain, plan on changing them by about noon if you start baling at 11:30... Heavy series Reynold or comparable only. I've rebuilt the pickup a couple times now along with some pickup bearings; also done some welding on the pickup frame and bale ramps. Beyond that it's been a very troublefree machine aside from the abuse it's suffered.

I've never had any trouble getting parts for the baler, but sometimes there is a wait for things like rollers... but that's not something that jumps up and bites you overnight. If you have a bad roller you can have one on hand even if you don't want to change it right away. I think there's 3 or 4 different rollers in it and probably 3 different size bearings. Bearings are metric and can be obtained locally if you have a good bearing shop....
Other than that, I'd say if you're baling silage, Claas is the only baler to have. Hay... depends on your situation.

Rod

This is only my opinion for what it is worth.