I am also new to trials and tried the GasGas 280 first. After trying a Scorpa during an excellent Trials experiance day in Stratford upon Avon I changed to one within the week. For new riders I think the Scorpa is better for us and I have been very happy with mine. The good guys can ride anything, I need all the help I can find!
There Seems to be some good bikes on the classified pages of this site, including a few Scorpa's.
Good luck!