You have the original BetaRide 10.20. Your ski shared the exact construction to the BetaRace 10.26 of the same year. In each Beat lobe was a wood core, wrapped in densolite. Then a titanium cap was put on. The following year, the Ride 10.20 and the Race 10.22 replaced the wood core with hollow titanium tubes (Powerchannels) and wrapped these in densolite. Again the titanium top sheet was used. For this season, the Ride 10.20 and the 11.20 became 2mm wider (people get wider with age, why not skis?). Also, the Beta lobes are now larger and further the the outside (B4) , and have new riser plate called Chassis . The 10 now has carbon fibre powerchannels, and the 11 has the titanium. Both now have a new material called texalium as the top skin. It is woven fibreglass impregnated with aluminum.
The newest versions are much lighter than the original, yet maintain the torsional rigidity of the original. Refinements have made better skis, and you should try them if you get a chance. Well, maybe you shouldn't try them, since you might be sleeping in the dog house when you decide to get a new pair.