Which sport/acro biplane from plans?

A guy here who doesn't speak English asked me to investigate which aircraft
he should choose to build from plans.
What he wiches:

- single or 2-seat
- limited aerobatics
- engine M14P or Valter M332/337

I can also assume that he isn't the big-buck one. I know that this question
was discussed here some times earlier, but weold like to accumulate the
opinions.

Thanks in advance for any reliable comments and suggestions.

Fly fun!

Alex
http://twistairclub.narod.ru - Sport Rotorcraft of Russia