Chris,
You have received a lot of good advise here. Yesterday I discused the same progression you are planning with a fellow pilot and flight instructor. The second plane is one of the most important selections you will ever make. It will derermine the learning curve for future skill progression.

Extra 0.40 size vs the Sig SE // These planes have completely different flight envelopes. We have several new pilots using the Sig SE (or similar) as a second plane. The learning curve for these pilots is very good. When adding too much elevator the planes don't have a tendancy to tip stall as the 0.40 Extras do. Which would be the better choice for you is difficult to say. I would say go with your choice as above.

Going to the 1/4 scale from either of these planes will be a big jump! Get some help when you do this as there are many things to learn not only in flying but also in setting the plane up.

Picture of my Midwest Extra attached (sold this a few years ago after moving to 35% planes > > this one had the original flat stabs which were changed to airfoiled in later kits)

Check out this link for addional pictures http://www.frederickmodelaircraftclu...nstructors.htm

Bill