Well, you know what the chances of HGF on the 1.8 are, whereas the V6 is very unlikley. Personally I'd have the 190 anyway, but check the obvious of a leaking thermostat housing and of course the belts will need doing, just due to age as well as nearly there for mileage, unless you have proof that they have been done of course!
Other than that it's down to condition and personal choice, but as I say I'd go with the 190 anyway.
Regards, Rob.