RE: LA .10 any good?
I agree with ffkiwi, the Enya 09 is a very very good engine, but they take a long time to run in. I have an LA10 as well and it is a fine engine, easy to start and run from scratch, but not as powerful as the Enya.
If you can spend the time running in then the Enya would be my pick.
The AP 09 quality can be variable in my experience. The TT07, while I'm a fan of these, I wouldnt recommend for a HOB model as they can be heavy and the 07 is not long on power.