I would buy nothing but Jamesway.
Put it in a brand new 14x40 back in the early 70's and in a brand new 20x70 in the early 80's.
Had one in an old 14x40 and another in a 16x50.
Blew corn silage, haylage, high moisture corn.
Not a lick of trouble.
I have replaced blower bearings on a one year old valu something or other at a place I worked at.
I don't trust much of anything with valu in the first part of the name or o-matic at the end.