os 40 FX into what ARF
Try the GP Kaos 40. From what I've seen, overall reviews of this model put it in the "fair" category (in terms of fit/finish), and you can't expect much more for $130.
If it is built straight, you will LOVE the way this airplane flies. Many of us have a long-term love affair with the classic kit version.
I know I do.
Steve