Hi Ken,
The Fuji G690 is the camera I use the most. I have two bodies, a G690BL and a GL690. The big negative is a great advantage, allowing to obtain superb pictures using almost any film/developer combination.
The G690 is almost indestructible and feels very solid when you hold it. All the lenses are top-notch.
Those Fujis are quite big and heavy to carry around, but I managed to get along with it. When I want to travel light, I take one of my Rollei 35s instead.
I own the 50mm, 65mm, 100mm and 100mm AE lenses. I have tried the 150 and 180 telefocus. Both tele lenses are better used on a tripod for landscape or medium range photography, because of their relatively high minimum focus distance (2m/6.5ft for the 150 and 2.5/8.2ft m for the 280) and the accuracy required for proper focusing.
The lenses I use the most are the 100mm AE and 50mm. I find the AE lens very useful for street photography, together with TRI-X Pro rated at ISO 800 in Diafine. The 50mm is great for landscapes/cityscapes, used with Provia in bright daylight, or NPZ800 in low light.
The only trouble is that all the G690 lenses are very rare outside of Japan, specially the 50mm and the 100mm AE. An used 50mm (equivalent to a 21mm lens in 135) will probably cost more than $1000 nowadays, but you should be able to find a body + non-AE 100mm + 65mm quite easily.
Keh has two G690+100mm outfits for sale at a reasonable price.
My advice: use 220 film, you will get 16 exposures per roll, instead of a meagre 8 with 120 -- TRI-X Pro, Fuji Provia and NPZ800 are all available in 220 format.
Abbazz