Although it only takes a few minutes to change the primer slide assembly to a different size, two RL550B Dillons is a good option which would pretty well tie up your $1500 budget if you get a few accessories. This allows for each to be set up for different size primers, ready to go after the tool head ( and possibly a quick change assembly) is inserted. While the 650 and 1050 are awesome and get excellent reviews, the conversion kits and assembly are more expensive than for a 550. With ease, I can cycle 300 rds/min quite comfortably and still pay attention to most details, such as primer pickup, powder drop and hopper level. I neither try to compete with those who claim they can reload 5-600 rounds per hour nor do I engage in a race with myself to see how quickly I can make the shellplate turn. If I didn't own Dillon products, I wouldn't feel comfortable in rating them. In my opinion the 550 is the best buy for moderate reloading requirements.
Resale value, if you use it for about 6-7 yrs, is still excellent, at almost 100% of original cost. I recently sold one I bought in either 2004 or '05 for about $80 more than I paid for it new (not figuring in taxes or shipping). I had three on the bench and sold the oldest to buy a second Forster. Try selling a car after 7 yrs and see what percentage you get on original price.
Thought I would share my thoughts on this subject.