I just want to share my Jupiter experience.
It was my 1st low wing model and took all the hard landings without damage. Engine was an OS FS70 (I). The model was painted red which gave him a very nice look.

Now I bought another (well used) Jupiter and fly it just for fun. I tried many different engines in it (OS 50SX-H, ST G40, Saito FA50, OS FS48 and FS52).
Currently I use it as a cheap everyday model with the FS48 (10x6 APC). The engine came to me in bad and worn out condition. I changed the bearings and cleaned it from gunk and rust. It fits the Jupiter very well even it is not an "unlimited vertical" package.

In the picture you see the Jupiter together with his bigger brother "CAROSEL" which is more a fast RC-1 style model. Unfortunately it was discontinued and not produced for Thunder Tiger.