Having owned BOTH the Super Cub and the EZ Star...let me suggest that you start with EZ Star.
While many will tell you the Super Cub is "easy to fly" my own experiences were the opposite. Chalk it up to "operator error" if you will. However..The EZ Star is a DREAM to fly.
I had a good suggestion from a friend to slightly increase the size of the EZ Star's rudder ( and later on, to increase the size of the motor)... I still fly the EZ Start nearly every time out. It'll teach you things in an EZ easy way.
The Super Cub comes with a radio/transmitter and servos that cannot be switched to another plane easily. The EZ star ( at least the $59.00 version that I bought). allowed me to add my own servos; receiver and transmitter. Those articles cost some money, but they can be moved to another plane at will.
The prop is a pusher on the EZ Star. I still have the original prop on! I can't count the number of broken props that occurred during my formative months with the Super Cub.
Read carefully the www.rcgroups and www.rcuniverse sites that focus on the Super Cub. You will find issues about "glitches" in the weak radio system. It is a 27 megahertz system that is useless for most normal R/C uses. Many users change everything out at their first chance.
I am not knocking the physical structure of the Cub, only its poor and amateurish radio/tx/servos/motor arrangement.
Perhaps, if you are focused on and convinced that the Super Cub is the only plane for you ( wrong choice, IMHO)..then at least, only buy the foam parts, and add your own tx/rx/servos.. At least that way, you will have transferable parts. Spend it now, or spend it later,...sooner or later, you will spend it.
One thing that I am not sure about..and that is your commitment to fly any planes after this one. It may be that this is a one time use deal...never going to fly again. Perhaps, you just want to take some aerial pictures...if so, the Super Cub may well be your solution..but..be forewarned..this hobby is addictive.
regards, Rich