To me, wood also sounds better but it is causing some trouble. When you buy a new wood recorder, you are allowed only 10 min/day for the first week, 15 min/day for the second week and so on, because the material has to adjust to the moisture. You must not play the very high notes for the first few weeks. I bought myself a new rosewood descant recorder and whew - it seems I am oiling and airing and warming it all the time. It needs more oil than my car and I can only hope that the wood will be saturated eventually.
A plastic recorder is more robust and will never warp. A good platic recorder is better than a bad (or mishandled) wooden one, but not so good as a good wooden one.