Vittoria UltraLite 51mm Tube
Lightweight, high-quality butyl rubber means you get the performance and pinch-flat resistance of latex with superior air retention to latex. The valve cores are removable.
These have been my staple tubes for years. What I like is the threadless stems that make pumping super simple. I loose more air with threaded stems while trying to get the pump head off, but with these, I get the perfect pressure. The weight is reasonable too. Do it!