[quote="Bill Bowley"]So, how does the sound of a Mosrite compare with a BURNS Marvin?
I have owned both guitars (the Mosrite first).
The Mosrite sort of explains itself, visually. Due to the way the tremolo bridge/tailpiece is arranged (more Bigsby-like than Strat-like) it doesn't have that tight, focused sound we expect from the Fender, with its sharp string angle over the bridge and short dead-string-length behind the saddles. Instead, the shallower break angle of the Mosrite Vibramute unit is more akin to what you might find on a well-adjusted Gibson. The string sound is slightly fuller and less penetrating, though the powerful pickups fitted to the guitar (similar, but not identical, to P90s) can introduce a glassy high-end when the bridge unit is selected.
The other difference is a lack of sustain as compared with the Strat or Tele. The string path on those two of Leo's designs means that the bridge is clamped down tightly, with a steel-guitar-like attack and sustain. The Mosrite with Vibramute has completely different string geometry, more like an archtop or jazz guitar. The Mosrite isn't really an analogue of the Stratocaster; it's more like the Jazzmaster...
Still... I traded in my Mosrite Ventures at Modern Sound (Charing Cross Road) in 1972 because they had for sale... a secondhand 1965 Burns Marvin.
And I still have it - the longest survivor in my collection. The second longest survivor is a Gibson Les Paul Custom I bought new in 1978.
Hope this helps,
JN