Open ended question, but I will take a jab at it.
My first press is a Rock chucker. I still use it a lot. I also have a junior I use for range work just because it is a bit lighter to tote.
I prefer a good balance beam scale myself, RCBS has pretty good reviews.
Buy once cry once.
If you go progressive, I suggest setting one die up at a time. Then go at it one round at a time. It will allow you to understand what all is going on at each point.
FYI, you can buy as good as you can load anymore. It will allow you to shoot more a bit cheaper.
Step back and look at how many rounds you shoot a year, honest numbers. Then price everything out and see how much ammo you can buy for the intital investment. Honest savings on shooting 500-1000 rounds a year will take you a while to overcome the intital investment.
I mention this because I have two younger friends that wanted to reload. They have all the basics for a single stage. Yet they shoot mostly store bought ammo. One bought a Dillon square deal and hardly uses it, yet now he thinks he wants a 650? I have five progressives, two are for pistol cartridges large and small primer. The other three one is set for large primer one for small. The third I use as an automatic turret press for case prep. Yet I find myself at the single stage a majority of the time.
Reloading is an excuse to buy more guns because you can shoot cheaper better ammo;-).
Jeff