Not sure if I wanted to get in the middle of this, but will add my 2 cents.

I have seen many flyers start with a high wing first plane, which they should, learned to fly it well. Then they got a low wing, such as the 4*, and they weren't ready for it yet. I recommend a shoulder wing, such as the Easy Sport, for a second plane

Sig also has a shoulder wing called the "Mid Star". I think either one would make a great second plane. Once you master it, the transition to a low wing will be easier.

I'll probably be outvoted here, but that's my opinion Good luck with whatever you choose.

BO First you crawl, then you walk, then you run