I agree with building but also time is money.
I went this route after building a few different grinders as well as using almost all of the name brand ones.
https://kadrmaskreations.com/products/srg-15-2x72-belt-grindersander-frame-with-wheels
For the money I think it's the best grinder out and under priced given his thought and work on them has a cam over gas sock, direct drive, three arm tooling slot. His aluminum wheels are also better balanced and nicer machined then any I have used short of vwjackstraw on ebay.
Adjustable work rest, adjustable platen, stainless or alum or powder coated.
5 other makers have purchased similar after getting to use mine. He offers a few different styles all use the cam over gas shock tension tracking setup and what swayed me originally but his workmanship and customer service where all gravy after. Everything is lined up and threaded straight unlike kmg as of late.
Also made in South Dakota not China