Good for gig mobiles as the suspension soaks up the extra weight of amps etc quite nicely (ferried a few friends to their gigs in mine...)
They are what they are. Relatively old but generally reliable (if looked after) very much like any car of that era.
Mine is worth £400 tops yet if i sold it today, someone would be getting a 1.9 turbo diesel returning 40MPG (35 if driven hard..) that flew through its last MOT, has electric sunroof, windows etc and fully working air con. Bargaintastic really
Body work is probably getting a bit tatty on some, but if you can find an SX spec (not VSX as the suspension is more complex) that is either 1998 onward or even better in facelift HDi spec for your budget, then I dont think you'd be unhappy at all.
Dont be too put off by high milesas the TD and Hdi engines can generaly handle it, but you want to see regular oil changes and importantly, LHM fluid change every 36k (mine hadnt been done when i got it, was a horrible job to do DIY, LHM is nasty stuff but my steering was very stiff till i got round to it) I cant recommend them in petrol models as the engines were a bit naff im told.
Check for damp in the drivers and passenger footwell (LHM leak from the brake master cylinder will make the carpet green on the drivers side or unexplained damp, theoretically on either side, COULD be the heater matrix, a pig of a job)
Other than that, check the clutch bite as they are about £200 to have done on these and of course check for sign of HGF (tends to occur at around 130k on abused TD engines, dunno about the petrols or HDi) as this is an expesnive job too.
Still might be worth considering a 406 though

nicer looking car in my opinion and technically a newer design for the underpinnings on the same age of car, as the Xantia was originally based on the 405 and i dont think they changed it much.