I agree the press is not as critical as other factors like the dies to the end result, but it is meaningful to the process and the experience of the user.
I was also in a position where I'd owned single-stage (Rock Chucker and Lee Classic Cast), a turret, a progressive, etc., and I just wanted a supremely satisfying single-stage (I no longer had the RC or Lee). I would have considered the Prazi but it was totally unavailable at the time (2020) and I didn't want it very badly. There had never been anything wrong with the RC or Lee iron press, but I wanted something different.
I got the RCBS Summit. I'm totally happy with it. I installed the aftermarket cross-pin pivot and I mounted it on a massive press stand bolted to the concrete floor. I like that the shellholder doesn't move. I believe in the precision I'm able to achieve with this press. I have mixed feelings about the cam-over. I'm still figuring out how to use cam-over and when and when not to.
I've reloaded with various tools from all the popular makes. Redding is the one that I've found to frequently make the best there is. I've migrated to using almost all Redding dies and their top-end dies. Since I reload for two cartridges, it's not been difficult to afford the very best dies. I'm looking to add a third cartridge this year and it will cost me close to $500 for the Redding dies. My Redding beam scale is the most sensitive I know of. I have a Harrel's powder measure, but I think I might have been better off with a Redding. Everything I have from Redding (except their die lock rings) is top-notch and I don't think I would have any doubts about their presses being just as good.
I think I would enjoy a Big Boss II or Ultra Mag for rifle, but the stroke is excessive for handgun. My Summit allows me to short-stroke, not raising the die more than I need to clear the cartridge. If I had a conventional O press, I'd probably also get a small bench rest press for handgun. The thing I don't like about the small presses is they're unlikely to accept the Lee breech-lock bushings, which when used with the steel lock-ring eliminators is a good quick-change bushing, unlike the Hornady bushings which are independent of the lock ring and so impossible to adjust with precision because the bushing must be loosened before the die can be turned in the lock ring. Nevertheless, the standard die threads and lock-rings other than Redding are a perfectly good system too.
The other serious alternative to Redding dies and premium presses like the Big Boss II, Rebel, etc. would be the Wilson chamber-type seating dies and an arbor press. I can convert my Summit to an arbor press or buy a K&M or 21st Cent. or any arbor press -- the most exotic being the one from AMP. I'd still need a conventional press for resizing, but if I were to use the arbor press and Wilson dies for seating, it would change how I would use the conventional press and might change what I desire from it. I don't use an arbor press or Wilson dies because the dies are not made for either of the two cartridges I reload. The third cartridge I'm hoping to add this year could be seated this way, but I am not likely to opt for that since a Redding seating die will work consistently with my existing equipment. I mention it because this method of seating is perfectly viable for 300 PRC and has unique benefits.
