I use a Dillon 550B for 3 gun (.223, 9mm, etc) and a Lee Classic Turret for rifle. I have gotten 10 years of use from both without major issue. I have to say "major" b/c running a progressive press requires a fair amount of setup and "running" maintenance. The Lee turret has produced some very accurate loads and zero issues at a great economy. I lust after a Redding T7 but I have never made the jump b/c I don't think I will gain any real capability change for another $150.
Using a turret press is a no-brainer in my opinion. The Lee turrets are $12 a piece and I have seven setup with die combos ready to go. That reduces the time to swap to different cartridges immensely and helps maintain consistency as you don't have to worry about regaining die settings during removal and installation. There is toolhead movement with both the 550B and Lee Turret. I have seen/ heard a lot of people argue about seating depth consistency from the "slop". I have never had a problem and I have seen tests or reviews in which folks have tried to find a resulting consistency issues and haven't. Keep in mind that when the ram pushes the cartridge up into the die and the toolhead lifts slightly that it lifts to the same point every time. A couple of folks offer custom "floating toolheads" for the 550B to reload competition quality rifle ammo that operate in a very similar manner. I think they are just re-inventing the wheel, but then I haven't tried them either.
My consistency issues come from things like excessive case lube, allowing the bushing to float a bit in the FL bushing die, brass quality, BTO variations in bullets, inconsistent Meplats, etc.. I haven't found one yet attributed to the press. If I did, I would've bought a T7 as soon as I found it.
The press is the easy part; just wait until you start looking at case trimmers, scales, powder measures, priming tools, FL dies vs. neck/body dies combos, annealers, etc ha ha!
I believe there are a few tools that you need to pay for precision, accuracy, consistency and a few that just don't need a lot of money thrown at them. In some cases you face the choice of paying for automation vs. doing a particular step by hand (like chamfer/ debur). An accurate scale that weighs to within 1 kernel of powder has capability increase. A powder measure that you use to throw %90 of your charge before trickling it...doesn't need to be expensive. The difference between a high-priced rotary tubmbler and the Frankford arsenal...? NIL. The difference between a STM rotarty and a corn cob media vibratory tumbler....huge. I suppose this the maze all of us attempt to navigate as we spend our few, hard-earned dollars hoping that we are obtaining a value. Value = cost/ quality ratio.
Here is my equipment list; hope it paints the picture:
1. Lee Classic 4 hole turret press
2. Lee Perfect Powder measure
3. Wilson case trimmer with drill attachment on the cutter
4. A&D FX-120i scale with auto trickler
http://www.autotrickler.com/
5. Lyman case prep center
6. Sinclair small rifle primer pocket uniformer with drill attachment
7. Annealeez annealer
8. Frankford Arsenal STM rotary tumbler
9. Redding bushing dies
10. Lyman digital caliper (should have bought a Mitutoyo long ago; reccomend you spend $100 on one of these, just make sure it ships from Japan and not China)