I always hear old timers bemoaning plastic foundation and don't even get them started on the full plastic frame with no wood whatsoever. I too love wooden frames but a few years ago a bought a few full plastic frames for convenience. Aside from the departure from tradition, I see no difference in them other than saving me time. A few people have told me they get too cold and reduce overwintering success, I haven't observed this. A bear got into a few of my bees and all the one pieces survived being stepped on with just a few cracks that made no difference, all of my foundation based frames were completely punched out and basically useless. I will continue to buy wooden frames as the difference in frames helps me track things within the hive but I have no issue with moving my 40 hives to essentially all plastic.