This one has True Temper Tubes. But is there that much of a difference between the tubes?
From what I understand, TT-Lite is an evolution of the OX line of tubesets that True Temper produced. That seems to be the case for a few reasons - where OX was previously used, and then in favour of TT-Lite (both in Diamond Back's line-ups, plus other makes that used them, eg Trek), and the varying descriptions used where OX was (custom triple butted) and where TT-Lite was (custom triple butted / custom short butted).
I don't know much about Ritchey Logic tubesets, though. What I do know is that TT-Lite framesets were pretty light, for steel.
I have an OX framed Diamond Back (91 Axis) and 2 TT-Lite framed Diamond Backs (2 x 95 Apex), plus an AVR framed 91 Apex, so have reasonable access to compare them both on weight and feel.