I ride in the US and have a 1987 Beta TR 34 and a Fantic 240 Pro. One has to go as I set the spring lineup of bikes to ride this year. I am not a serious trials rider. Go to a 2-4 meets a year, ride novice and in my yard. I do it because it's fun and it helps so much with enduro, hare scrambles etc.
Both bikes are in about the same shape. The Fantic my be a little nicer. The Beta is the best balancing bike and is a better pure trials bike. I think parts are much harder to find though. Worry that a crank or ignition failure might finish off the Beta.
I like to ride really technical trails with lots of logs, off camber tight turns. Might run 12-14 miles in an afternoon. Sort of endurocross like, and the Fantic is fun in that element, better than the Beta
My mind changes daily on which one to let go and keeping both isn't an option or practical. Looking for input on which bike is best to keep.