I was going to suggest the Super T ELA (for telescopic) or Simplicity for fixed length tube... I've had one of their older models (precise+) for 3 years now, daily use, have dropped it 2 stories, have dropped it in med, has been run over by a forklift and it still wors flawlessly... has a lifetime warranty as well (which includes scratched finish)..rhodium plated contacts...
And now they've released their own rebuildable that replaces the top cap and turns it into a hybrid...
So it is probably the most versatile, I've seen to work with about any battery or topper out there...