The kit may be built better, it would depend upon who built it. If you know them and trust them, and like the way it looks, then go for it. A couple of things to consider, though:
First, as you know, the arf will already have ailerons. You wouldn't have to be modifying them later on.
Second, and this may be the most important for you since you are (I believe) in college, and probably have a very small place to live--the ARF has a two piece wing, and the kit's wing is glued together--one piece, at about 78 inches. Needs lots of storage space. The two piece wing comes apart in two ~40 inch pieces! Somethings to think about. The ARF's are really nice looking planes, and fly equally as nice.
One other word of caution. I once had a stinger airplane covered in almost exactly the same scheme as the blue/white senior. White leading edges with transparent blue covering elsewhere. I found it much harder to see in the air than the red one. May have just been me, but I'll never have another plane with those particular colors. I love blue, it's my favorite color, and red may be my least favorite, but it sure is easy to see in the air!