I agree with the group in that the sig Kadets are the greatest trainers that you can fly and all are fun to build. I have been flying for 6 or 7 years now and really enjoy building planes/. I have 2 Lt40's and 2 senioritas and fly them regularly. For those that talk about Roll coupling and all those terms they have lost the enjoyment of just flying a slow easy flying airplane. I often just fly with friends at the field with a Seniorita with an old OS La40 at about half throttle and just follow eachother through the air. It is not always about speed and performance!
As you get more experianced and want to go to a midwing, fast fun plane you cant beat an Uproar from Tower Hobbies, but that is for the future. Build whichever you choose and go out and fly it until you feel that desire to advance.. Then let us know what 3 midwing planes you can't make you mind up on.