If you look arround for the best second plane polls and threads you will see that 4* is voted by majority as the best second plane.

I can't talk about sticks or any other plane other than my tariner and 4* which is my second plane and it is a lot different than flying a trainer first of all it does not have the self recovery like a trainer and you point and it goes in that direction.

I started flying 4* after 100 flights with my trainer and in most ways it is easier than flying my trainer. So when you feel ready you should be able to handle it.
Landing was easier take off was evenn better with 46FX.

Flying 4* is not a lot difficult to fly, anyone flown both stick and 4* will better comment on which is better.

I have over 40 flights with 4* and it has a lot to offer and first of all it is fun to fly, it looks better than a trainer, I will take my time with it and fly it as much as I can.

IMO when you master the trainer go with 4*.