I've flown 3 of the Tecnam LSA's, both of the high wings and the low wing, they were very good for their "mission" and built in a conventional aluminum manner, same as a Cessna, so to speak. The all flew "hands (and feet) off" and were very easy to control, very stable.
I also flew the CTSW, it is a little more sensative to power changes and requires a little more skill to fly it smoothly, as it's so narrow aft of the cockpit, the tail wants to dance when you change the power setting and it requires a lot more rudder control to keep it smooth. It's also got drooping ailerons when you put down the flaps, but that can cause a new guy trouble in a blowing crosswind, unless someone tells him to leave the flaps up in that situation. The "up" side of their flap system is, you can go negative with the flaps (-6) for a faster cruise speed.
The CTSW is a "glass" built airplane, ie. fiberglass, and they've had some issues with hanger rash and gear damage when someone drops it in too hard. It's a much cleaner look to the skin, no rivets, and the cockpit has a little more elbow room than the Tecnams, but you've got to be more careful both flying it and moving it around in the hanger.
If a pilot has lots of time (thousands of hours, not hundreds) he'd have no trouble figuring out the CTSW, but if he's a newbie, the Tecnam is much more forgiving and a more stable learning platform.
Both have sticks instead of yokes, which I like. If you've got money, you can load up either one with all the latest EFIS, Garmin, Dynon, a balistic chute, what ever you want, and they have the same Rotax motor in both, you can burn auto fuel in them to try to save a few bucks there.
Now, I prefer a tailwheel, but that's what I learned in so that's what I want to -go home- to on my days off. But I'm not trying to go anywhere in it, just around town. If you want to fly long cross country trips fast, and not burn much fuel, the CTSW is the way to go.
Here's the Tecnam website with their LSA's, they've got other airplanes too, here's their new twin.
http://www.tecnam.com/index_en.html
Click on "aircraft" and then later, LSA's.
And here's a You Tube vid. on the CTSW
http://www.youtube.com/watch?v=fZ8q3Wm-vRc