all "chine lock" boats were replaced and hull's destroyed. parts are really a hot topic right now. Ive personally owned two epics in the last 8 years and Ive never "needed" a factory part. i did upgrade my SX with a fresh water cooling system but i don't consider that a repair. the engines are extremely reliable , if it does have problems its almost always a fouled spark plug or dirty MAF sensor ( yes you can clean the sensor). but like any boat things break and if you need to hook up a scan tool your gonna have to rent it from rick or hope your near an old dealer. most things can be diagnosed by symptoms alone, but every now and then its gonna be tricky. i work for Lexus and our factory scan tool does not work on the boat. Ive never had to use one. knock on wood. i tend to just foul plugs, i run a lot of weight at 22 mph and it fouls plugs.
props and drive parts haven't been an issue. a lot of us have acme's, there awesome.
there not for everybody but many of us wouldn't own another boat. it helps if you are at least a little mechanically minded. even with there downfalls epics tend to hold their value well. if your buying in prime season your probably gonna pay likewise. some of us have gotten screaming deals, my first e22 and then i paid top dollar for my mint SX 3 years later