I too have a Fujinon 135mm (the older model with lettering on the "inside") - Cracking little lens, lightweight, and oodles of coverage which copes with most things. The other two lenses I usually travel with is a 180mm and a 300mm (and occasionally a 90mm). Sometimes it is a toss up between the 180mm and the 135mm, with the latter usually winning out as it usually travels (reverse) mounted on the camera.
Originally Posted by Bruce Osgood
It might be worth hooking up with a local LF user and trying a few lenses before dropping another wad of cash - If you were close by, I'd have said pop in for a coffee & natter.
P.S. I'd suggest avoiding the Xenar lenses - Whilst often found cheap, I've never been impressed by the coverage and nearly always hit the limits on the ones I've tried.