Take a good look at the Sig kits, they are a real pleasure to build. I have not built a 4* yet, but built the Somethin Extra (GREAT plane!), Riser 100, and Astro Hog. For your purposes the Astro Hog may fit the bill, it does require a bit of sanding but the thing is built like a tank and frankly is one of the easiest planes I have flown, and a lot of fun (I built it with 1/2 the recommended dihedral and as a taildragger). I built up my core skills with this airplane, and even taught a rookie to land it on his first flight! Recommend a 60 2 stroke for it. I had relatively little building experience when I built the hog, but followed the instructions and it turned out really nice and true.

From what I have heard the 4* is a lot like the Ace Bingo, which itself was based on the Ace 4-60 which was another airplane I had the pleasure of flying. If that is the case, then the 4* must be an amazing plane.

There is a good reason Sig are still around, they are just fantastic. I have several of their kits stockpiled (and lust for some of their ARFs)!

Good luck with whatever your choice,

David