There's a long litany of faults with MOST 3-point disc's on the market.
1st) Most are way too lightweight.... That is a double-edged sword. They don't want to go in the ground, and they aren't very durable. A large number of them end up on smaller tractors that can't handle a 2500lb disc. They HAVE to be somewhat lightweight....
2.) Being attached by the 3-point hitch makes them somewhat "rigid" with regards to following the terrain. A wheel disc (or older "drag disc") will flex with undulations in the ground you're passing over.
3.) 3-point disc's are shorter coupled.... To make them easier to lift, as well as more manuverable, the front and rear gangs are closer together than your typical wheel disc. That causes them to want to rotate around the front gang when they're sunk deep into the soil. (Top link under compression....) Not the worst of problems, but 3-point disc's tend to be difficult to get the REAR gang in the ground. Extend the top-link, and the entire disc wants to "float" on top of the ground, compounding the "lightweight" problem.
There are "better" 3-point disc's. About the best was an older design Massey Ferguson sold for years. They were "marked" by a couple "adjusting levers" that would allow you to change the angle of BOTH front and rear gangs from the tractor seat. They just worked better than most 3-point models....
A final "stake to the heart" for 3-point disc's (as far as I'm concerned) is they get a LOT of side-loading on their framework IF you make any turns (however so slight) while they're in the ground. A wheel disc, or drag disc, by the nature of their design, doesn't deal with that. The LIGHTWEIGHT (There's that word again) frames of most 3-point disc's will not take that for too long. They tend to "loosen up" after a while, finally breaking welds or "structual members".
The wear and tear won't happen overnight. The occasional user won't destroy one in short order. It might even last a lifetime. But if you plan on using one a lot, doing many acres, a wheel disc is MUCH more durable.
I have TWO wheel disc's. One is a larger, folding "wing disc" that mostly stays at the farm. (25'-6") My smaller one is 8'-6". I keep good tires on it, so it can be towed behind a pick-up. I take it to most jobs that way, instead of loading it off and on the trailer. The tractor I use it with could easily handle 10' or 12', but that is too wide for easy transport.
I'm currently working on a THIRD disc. It is a model #350 IH wheel disc. It's an 8'-6" wheel disc NOW, but will be converted into a 3-point disc. I don't care much for them, but sometimes they're VERY handy. IF you can justify having BOTH types, you get the best of all worlds......