I have 2 of them I use for rifle cases. I've never had a problem with either of them except for adjustments to the priming system, hence I only use them for rifle cases and I don't use the 450 for priming.
I prepare all the brass on a single stage press, them prime on a bench-mounted RCBS Autoprime. Next the brass goes into the 450, where I charge, seat, and crimp the cases.
The 450 is not the best press for pistol cases. You will want to upgrade to the 550, or probably better yet, sell the 450 on evilbay, and buy a new 550. The 450 will do very well for pistol cases in one pass.
Depending on the type ammo you want to reload, the 450 might work very well, or a 550 might be better.