I'm going to be adding sanding next year. I want to get a 1.8 sander. I've been looking around for a used one, but all that I've been able to find in my area are Fisher and Curtis models. There are also some names I've never heard of. I've seen that when they say rust that means it's full of rot and been patched to many times. I want to spend around 2k for a used one. I have seen some stainless ones, but they are around 4k used. Is it really worth the price for the stainless? Wouldn't regular washing of a steel one make it last with painting it once yearly? Almost everyone I've looked at needs a new conveyer chain at a cost of $300-500. How long/material passes through the sander before replacement? I realize it's like a cutting edge wearing out based on useage. So in a nut shell what should I be looking for in problem areas on a used sander?