I am not a Televue owner, but have had the priviledge of looking through a few instruments rangeing from Pronto, to Renaisance etc. and i can tell you there stuff is very, very good. Its very expensive, but its not that expensive for nothing.
But i can see where you are coming from, i have a 12" dob, and an 80mm refractor, and the 80mm refractor gets by far the most use! The only troubles i can see with televue stuff (if you can call it that) is fittings for them can be a bit different, specially if you want to mount other stuff on it, and size, but again, although the aperture isnt staggeringly big, the IQ from it is about the best you will see for something that size, small, very portable, and viringally pure images.
TBH, if you have the megrez then, thats another quality smallish refractor, and i dont know if a TV would settle your needs, that said, if you get one, i gaurantee you would never get rid of it
