Roto-chock, X-chocks, etc: If they lock the tires together, preventing either from rotating, then the performance (as far as preventing trailer wiggle) will be identical.
We use 2 X-chocks, and it did make a significant different. But trailer wiggle can never be eliminated by fixing the centerpoint of the trailer (the tires), especially on a longer trailer like our 27' bunkhouse. The tires are flexible. Getting out of our front hybrid bunk will be felt back in the rear bunkhouse, and vice-versa when one of the girls jumps down from a bunk (no matter how many times I tell not to...don't get me started).
Tighten the X-chocks (Rotos, etc) as instructed, and snug up the front/rear stabilizers as much as you dare, and enjoy camping.
thebrakeman ('70), DW ('71), DD ('99), DD ('01), DD ('05)
2004 Surveyor SV261T (UltraLite Bunkhouse Hybrid)
2006 Mercury Mountaineer V8 AWD Premier
Equal-i-zer WDH (10k), Prodigy Brake Controller