Parktool torx key set TWS-2 with hardened steel keys.
Its strong and reliable. I think its also priced quit high but when your stuck and someone has "borrowed" yours, it will remind you to say NO the next time! It's also green, just incase you may have missed that.
• Sizes: T7, T8, T10, T15, T20, T25, T30, and T40