I've been using Greentyres for the last couple of years, and I'm ready to go back to pneumatics. I really, really liked not having to worry about broken glass, and never having to top off my tires, and even the higher rolling resistance gave me some extra exercise, which I need.

Here, however, are the two reasons I'm giving up on them, in order of importance:

1) They really have a lot less shock absorption than pneumatics, which has led to several broken spokes over the years (I weigh about 220 pounds). Flat tires are a hassle, but broken spokes are a much bigger hassle.

2) They turn a fun ride into a long slog, and it's really hard to keep up with friends on social rides. I'm ready to get a little less exercise, and have a little more fun.

So, now that I'm re-entering the world of pneumatics, what's my best choice of tire, tube, goop, and/or liners to avoid flats? There must be a whole topic on that in here somewhere...