Pulse XT 40 is an excellent choice for second plane! The only thing I would do while learning to get a "handle" on the Pulse XT is get someone to assist you with setting the throws/rates and even possibly using a buddy box if your first plane is a really mild plane (I am not familiar with the apprentice).

I purchased a Pulse XT 40 after I had already flown a big Stick and another off-brand sport plane that were not as forgiving as the Pulse XT. I had a much harder time with that sport plane. It was too fast for me and did not fly like my trainer so I struggled with it.

Once I bought my Pulse I could not believe how graceful and trainer-like the plane is. The plane is so docile when setup on low rates that is floats better than my Alpha trainer and yet, has great ability to do some limited acrobatics. I even boosted it up to an OS 55AX and I really have a great setup now and it is one of my favorite all around planes.

Good flying to you