What are your reloading/hand loading goals? I'd bet that with a Rock Chucker you're not looking for high volume output. Are you hunting, target shooting/plinking within 200 yards? 1500 metre precision?
I have a Lyman universal trimmer. I've upgraded mine with (caliber specific) trim pilots as well as power adapter so I can use an electric drill instead of cranking away manually. It's nearly infinitely adjustable, which can both be good and bad. You'd be looking at between $100~$150 and up to get into that brand new.
On a whim I also tried the Lee case trimmer (cutter & lock stud + case length gauge & shell holder). It's considerably smaller, requires an electric drill and some gloves (or tough hands) but is waaaaay faster, and other than not really being adjustable by design, produces the same level of finished/trimmed brass. At least as far as my needs go. Again, I find it hard on my hands/fingers.
Unless your kit came with one, you'll also want a chamfer + deburr tool. You can go cheap with a Lee for under $10? or balls out with a Lyman for over $50.
Good luck.