Modo is a young software so far, but i think itâs worth its price. and it will be worth even more as time passes.
when i talked about Modo and Lw in my comparison, thatâs the current situation, in wich Modo takes advantage of being young over Lw modeler with several good things: modern structure, expanadability, good UI, n gons and edges, well tought selection system, and modelling toolset and so on.
and at the same time needs some of the great advantages that Lw modeler has with its plugs and that only a bit more time of development will bring for sure.
even if itâs not SO distant from Lw modeler now, it doesnât mean it will be not very evolved as time passes.
so, if you have the money and like modelling go for it, because it will keep evolving and getting better in time for sure. also because thatâs what we expect fom Lux guys.
also, SDK is not avaiable now. but when it will be avaiable, cool plugs for modo will start popping up. 
lw 8 so far is not so different from lw7.5 and youâll be able to upgrade in the near future as well, if you need it for rendering and animation.