RE: Engine for Trainer - LA or AX?
I just have a problem with inferior stuff (Not saying that the LA is, but it is a cheaper motor). I have always been that way. I've owned some cheap stuff that broke, just due to its cheapness. I like to think that when the going gets tough, my stuff can handle it.
Personally, I get extra piece of mind out of that extra investment and its worth it to me. Just work a bit harder to make a tad more money, or save for an extra week or two.
For exmaple, I only buy Japanese vehicles. I mean, not to start a war here, but a Toyota or Honda will go further than any American car, everytime (I've had good luck with Chrysler products, however). They cost a bit more, but are worth it. There are some exceptions to this rule, but I don't think many will argue that generally, this is the case.
Anyway, I say go with the AX. It's an extra $50, and once it is spent, you'll have a more powerful, longer lasting, better accepted (Most people at my club hate the LAs), motor that you will be able to likely run in new models.
One poster said on here to get the LA for your trainer, then get a better engine for your next plane. This is the more expensive route, as I see it. However, if you want the trainer to always be flyable, then perhaps that is good advice. Otherwise, one engine now, and you'll be able to move it right over to your next plane (providing it is a .40 sized bird).
Good luck either way.