Sox - I have one of the Spar-T presses. It was a graduation gift back, well, sometime ago.
I use it today, mostly for 38/357. I have a Dillon 550 for the .45 stuff.
I have replaced the original RCBS die set with a tungsten die set. Piece of cake. No change from the original from 2o years ago.
I put a Lyman Powder Drop on it, too.
This press isn't going anywhere. My Dad made a half-hearted attempt to get it from me but I stopped him cold!
I have not loaded all that many rounds with it because I was not in the reloading thing for a number of years. It is practically a new machine.
Is there anything in particular that I could answer for you?
Regards