DP...
the only comparison I can make is between the 6mmLV and the 5mmLVW.
To my eye, the LVW appears to let a little more light through, stars look a little more crisp and it appears to offer sharper images towards the edge of the FOV.
But I'd really need to give myself a bit of time to carry out a more comprehensive side-by-side.
I've never actually switched from one ep to the other on any given night to compare on, say, Jupiter... a few doubles, a nice DSO etc
But you certainly notice the difference when you've got them in hand. The LVWs are huge compared to the LVs. Big bits o' glass.
The eye lens is very comfortably sized on the LVWs. Not that the LV has any problems in this regard. The LVW is just more of a "luxury" ep.