I ordered the new Leupold Vari-X III 3.5x-10x-50mm Illuminated from the opticzone and it also has the 30mm tube.
Let me tell you, to me, the newer 30mm version is much brighter than the older 1" version.
Now, as for whether you want the LR or the LPS, like Jon said, if you want better light transmission for general hunting, get the LPS. If you want (need) a true long range scope, then get the LR model.
Zachary