For the money, you have available, You should be looking on the boards and e-bay for a used Dillon Square Deal B. I habve been hoping to pick up a used 550 for $230-250 for a couple of years now, but they always go for more.
PS: I cracked the frame on my SDB over Christmas. If it had been a pro 1000, I'd be looking for a new press now. Since it was a Dillon, They said "send it back"
It looks as good as new now and they did it all for free.