openhelix has summed it up nicely.
If you're often doing freedives it my be worth it, though. The Riffe Cryptic and the Yazbeck both seem to feel the same (which is to say, fantastic), generally I've seen the Riffe about $70 more. The Oceaneer RC45 is made from Yamamoto 45 (yum!), but not the same interior finish as the Yazbeck, so it takes a couple more dunkings a year into mirazyme to keep it nice smelling.
<shrugs> I have scuba wetsuits, and freediving wetsuits, and select them for the task.
All the best, James