Don, Congrats on your first year of RC Flying! Sounds like you have done very well and are a long ways up the learning curve. Every plane will teach you something, so I say go ahead and get that second plane. Even if it is different style trainer, it will fly differently and that is something you will chock up to experience.

Don't worry too much about your landings, as that will come with time. It really takes a good runway where you can do touch-and-go's.

As a suggestion, why not peruse the catalogs and hobby shops and see what hits your interests? We can give you advice here on whether it is a good choice or not for a second plane. Let us know what types of planes look interesting to you. You'll have fun, and we will have fun too!