I've been looking at both the DR Trans-pack and the Apecks WTX. Liked the WTX I tried out but didnt care for the wing, as mentioned it seems very large not sure what size was on the one i tried so it may have been the 40 or larger.
I have both and much prefer the WTX. I do use the old style Venture wing 30#. If I need a new wing for some reason, I would buy a DSS 30 - no hesitation.