Sorry I don't have experience with either but I do have a suite of the Hutech IDAS filters (D1, D2, V4, HEUIB II, NB2, NB3), and the STC DuoNarrowband.
What kind of objects will you be taking? And are you looking for a broadband that filters out only light pollution? Or considering narrowband too?
For me, I've found narrowband to be more satisfying but a bit needed in colour correcting, etc.
Have a look at this post for examples of how much you want to filter out :-
http://www.iceinspace.com.au/forum/s...82&postcount=2