Surf Boat Shopping

So my dad is looking to get a new-to-him used surf boat and asked me to do some research for him. Main priorities are giant tsunami surf wave, fully automated ballast with nothing extra on the seats (enzo sacs ok), rough water handling (boat will be used in Chelan WA), comfortable room for 6-8 adults, and under $35K.
Initially started looking at Tige 24v (22v?), Centurion Avalanche (Dont think we can find an Enzo in that price range), MB Sport B52, Sanger 215

What else should I be looking at?
Are there any big ballast/hull differences year-to-year on any of these boats that I should be aware of?
Also ease of weighting would be ideal, I understand some of the larger boats are harder to weight?

Thanks in advance