The differences are think, although i expect someone will correct a few things.
County (4.0/2.5 dt)
coth seats Not eletric, No Climate Control, 16" alloys
SE (4.0/2.5 dt)
Leater, Climate control, (Possible Heated Front windscreen) TC might be on the rear wheels only pre 99. 18"Alloys
More wood, HarmonKardon Stereo, front fog lamps, Auto dipping mirrors for reversing, eletric heated seats on both sides, Colour coding, 18"Alloys
TC on all wheels
Revised interior, leather door inserts, chrome handles, colour coded dash. Thor engine. Side airbags.
The Vouge replaced the HSE.
Standard rear cup holders, colour coded bumpers but i believe that their was a cross over as I have seen some earlier Vouges.
Standard HSE/Vouge spec but with additions requested by the buyer, eg, different coloured piping on the seats / full wood dash etc, Carbon air filtration kit, Rear Picknic tables.
Special editions had different spec as well. I think the Holand & Holand, Beaudoux are based on the SE spec.
Satnav was an option on all HSE, Vouges etc..
Standard spec, Eletric Mirrors, windows, sunroof. Aircon, Air suspension, 4spd Auto or manual 5spd. remote locking, alarm etc etc....
Hope this helps abit.