the 1050 seems like it was practically made for the volume military brass - a couple of things I can tell you from experience:
1. make certain the bench is locked down. I was getting some powder spillage from mine, which means cleaning the press internals with a higher frequency.
2. using a decent ball or stick powder (AA 2230, 2460; Varget, IMR4895/H4895). The powder charging station is fairly accurate - within .1 to .2 gr. variance. The powder check station is what I seem to have a fair amount of trouble getting to work consistently.
3. There is a short-stroke prevention tab on the back - it can snap if you short stroke the press.
4. My case feeder worked well when it was new - I'm having some issues with cases getting lodged under the shell feed plate now - I've adjusted 'til the cows came home, without much luck.
5. My COAL have a typical variance of around .001-.002" - using Sierra SMK HPBT 69's.
6. The entire operation takes a little tinkering, but when it runs, it really runs - my output has usually been around 600 per hour, stopping only to refill the various hoppers, trays, and feeders.
My advice - get one, if you want volume/stockpile ammo, go a different route if you're looking for benchrest ammo.
Some of the parts that I'd say aren't optional - the low primer sensor, the enlarged bullet tray, and the extra large Akro bin for holding finished ammo (it fills up fast!), and the assembly DVD made life a lot easier (it comes shipped in three parts).
I like Dillons dies - they're on the higher end of die prices, but they're well thought out designs. Get some locking die rings - they don't come with them.
PM me if you have other questions, good luck.
-tc