Forget the Savex L-39 as a competition airplane. It is purely sport scale with the emphasis on sport.

What about the Composite Arf Mig-15? I don't know much about it but from the pictures I have seen it looks pretty good. Also, take a look at some of the [link=http://www.goldenwestmodels.net/]Golden West[/link] models. I'm not sure how accurate they are but they look pretty good on the web site.

Whatever model you choose, make sure the manufacture can provide information on the three view they used when creating the model. Using the same three view (and making sure it is approved for use by the scale competiton governing board) can go a long way towards helping you get higher static scores.

Kirk