So, what is your budget?
Do you want (or need) an FEL?
If you're thinking used, how handy are with wrenches?
And what types of cutter and cultivator are we talking about here?
1) Less is always better, of course, but I can comfortably spend 15K
2) Want-yes. Need-probably not.
3) I can fix most stuff on my mowers and am comfortable swapping out parts. I have never worked on engine internals beyond replacing a rod in a 1 cylinder mower. I know nothing about hydraulics.
4) 5 foot Bush Hog type rotary mower. The cultivator is a 70" Agric tiller. I already have it.