Welcome to the FCF
A VSX car would be my choice, as it has the same hydractive2 suspension as on the Xm. Which means it has a sports setting, or hard mode. This cuts in automatically when your pushing the car hard, it controls the body roll. However if you flick it into sport it will still ramain soft on normal roads but if you come to a bend it will firm up the suspension much quicker and give you a far better ride and handling.
I love this feature on the Xms, they really handle well with it, so on a Xantia id expect much of the same.
If your wanting a S2 Xantia then the Exclusive trim level has this hydractive2 feature, plus heated leather seats etc. But these seem to be getting hard to find and im not sure if the 1,9TD was even available in that trim.
If you dont want a car this complex (it rarely goes wrong but you do have more spheres and the suspension ECU diodes) then id recommend the SX trim. No earlier Xantias came with air con as standard. It was standard on the higher specs around 96-97 i think, someone will confirm that im sure, so those are the ones to look for.
SX trim levels are easier to find than VSX cars, so thats possibly the one to go for, just get a later model for more spec.
You could still get the 1.9TD in the S2 car, which tend to be quite highly spec with all, apart from the X spec, cars having air con.
All Xantias, apart from the base which there are very very few of, have remote locking, electric front windows and an electric sunroof if not fitted with air con.
Id recommend the HDi engine, you can get two powers in the 2.0 HDi. 90BHP and 110BHP. 90 bhp came with the X, LX and some SX cars, 110 was also available in the SX and exclusive trims. S2 SX cars have a rear spoiler, so thats an easy way to spot them. The HDi is a good engine, they seem to last and last as well, so long as they are maintained. However as has already been said you can not run these on veg oil like you can the 1.9TD.
The HDi is more econimical than the 1.9TD and i cant see insurance being much different between the two.
Mainly though it comes down to supply, whats available in good condition and with a good service record. Its very difficult to get the exact spec you want, better to buy on condition and history.
Im pretty sure there is a good check list of what to look for when buying, have a search on here im sure you will find one. Xantias are very reliable so long as they are maintained. Many owners dont have the first idea of what its suspenion is and therefore it gets neglected.
Chris.