I've got a 2002 Deauville as well as the SVS.
Deau forum
here
Just a quick run down of specs, introduced around '98, based on the NTV650 sort of (3 valves + 2 plugs per cylinder). Panniers were small, Brembo brakes, some front brake "warping" reported, otherwise decent finish.
At 2002 it was updated a bit, clear (better) headlamp, lighter engine internals, clutch improved, linked Nissin brakes (no ABS option on 650), no power change. Panniers modified, slightly bigger left hand pannier but still won't take a helmet. Paint finish went downhill generally, paint falls off engine cases.
One or two slight mods later (04?), like headlamps on and hazards.
Fuel pumps can give problems (common with Africa twin and other Hondas) but easily fixed (diode solves problems if caught early enough, otherwise Facet replacement £30ish). Many fit higher touring screens, Honda do one, or MRA vario is liked. Fuel tap has a reserve.
NT700 (actually 680) introduced at 06, engine becomes a 4-valve and fuel injected (no fuel tap), a bit more power and a lot more torque, oil cooler. Sort of pointy styling.
ABS option (but most have it), screen has 2 positions, need to unbolt it to change. Panniers better, with "baguette" hole joining the two sides (can be useful). Dual headlamp, fuel gauge (sort of). Screens have been modded and 08 have variable settings. Can get higher aftermarket versions.
All are very reliable and durable, comfy, and decent weather protection, built for commuting/touring. Handle surprisingly well, decent brakes, reasonably smooth if set up correctly, very light controls (especially clutch). Economy typically 50-60mpg depending, range around 200mls before thinking of refuelling. A bit heavy to move around. Need decent tyres (Avon Storms/Metz Z6 etc)
Top box needed for helmet, but it goes with the bike well.
Recommended for commuting/touring.
