I just switched to a Redding T-7 and it's a big step up from a single-stage. I should've listened to the advice I was given and done it sooner.
My only complaint with the T7, since I prime by hand rather than on the press is how the priming arm is mounted, but I'll get used to working around it.
The T-7 should outlast me and the generation coming behind.
To be technical, a Redding T-7 is a single stage press.
