Its going to be a hard choice!  with the new improvements on the new Sbach, I think it will have more squares than the MX2, so that should effect its wing loading.   But the MX2 floats pretty good also and has really good flight characteristics,  I have not flown the 25% sbach so I can't speak on it.<div>
</div><div>I know I'm not making your choice any better, thats why I just say flip a coin!  or just go by looks alone... which one do you like looking at better, they both fly good.</div>