I have been kiting for only 3 months. Started on Liquid force switch 165 and then also bought Liquid force truth 140. Both used with Cabrinha plates. I weigh 90kg and kite in 13-25kts with mid aspect kites.
I found the boards quite heavy and needed to be powered to get going.
The finish is excellent especially with the duraglide type bottom. I have since sold both and got an Underground wavetray 142 and love it.
I have flown the Tension 12.5m kite and find it excellent. In fact I could also say that it would do as a replacement for either my aero 12 or 16m it just has that much range. The only thing I didn't like was the black finish on the sail is type pf paint and it seems to be wearing off the demo kite rather quickly. The other thing is the popularity factor here as you don't see many at all around so re sale value could be a problem.