Stan's No Tubes - either convert the rims and tyres to tubeless with one of their kits or use their sealant inside your tubes. Either option should reduce your chances of getting a flat to virtually zero.
Yes, very mixed. The reviews I've seen on the usual websites of the panaracer kevlar ones seem very positive but then I came across this guy saying they were pants and to stick with the plastic ones. The plastic ones may be more robust but they are also known to cause pinch flats but this guy says that if you wrap them in duct tape that can stop it.