A trike is a 2 axis machine and as such is a bit simpler in some ways to learn to fly than a 3 axis aircraft. Don't be fooled though, handled wrongly, a 2 axis machine can kill just as quickly.
As Skeptic said, the wing's the thing. Generally, the strutted wings require a bit more care to fly than the kingpost wings, and in my experience, strutted wings are a bit heavier on the controls.
Definitely take your instructor's advice on which wing would be good for your experience and ability. I learned to fly on an XT912 with a cruze wing. The trim speed of the Cruze wing was about 48-50kts when set the trim was set to the fast setting.