In order for other members to help you, could you list how you use the car?
Example being Towing, School run, etc...
Mine would be all long distance journeys, family days out, major shopping trips (on the rare occasion we don't buy it online), school runs and Towing which we have not done yet but a Caravan is on the shopping list.
Hope this gives you a few ideas, but good luck on your search.
You may not have the wherewithal for the 2L diesek but I (if I were buying another today) would still consider the 1.6 manual again (even n the LX - would need the heated ft screen option) given the reduced fuel, VED and probable insurance without the driveability loss that the 1.6 petrol seems to give
We recently (2 months ago) bought a 54 plate 1.8 petrol Ghia.
It's a really smooth and easy drive for all types of driving, but definitely lacking the grunt of a diesel for distance driving. The extra costs of fuel and tax are negligible when you pay so little for so much car (£5100) and not doing a whole load of miles.
There are other posts regarding the main problems to look for, but the main one seems to be the Electric Park Brake fitted as standard to the Ghia's.