There was a face lift in August 2004 called Eagle eye, with double beam lights, rear disc brakes (EXI), change interior (Beige), Changed rear lights (round appearance) and Cd changer plus reshaped bumpers with fog lights.
VTI from the beginning has advantages of 1.6L III stage VTEC (130PS) instead of EXI 1.5L (108PS) and retractable side mirrors, Central locking (Factory), ABS brakes and Map light plus genuine 15" alloys and tyres instead of EXI's 14" wheel covers.
Oriel has a Sunroof, while PROSMATEC is AUTO transmission, UG is Upgrade for leather seats, there was also a NAV TRACK and C Track option available.
I will advise you to go for a VTI 2004 August with Eagle Eye, even if it is in normal condition, preferably on Petrol 50-75K driven.
The pre Eagle Eye (Facelift) Civic are considerable cheap and command less resale.
If you cannot find a VTI, go for an EXI PROSMATEC Eagle Eye again with petrol and Honda maintained even if its mileage is close to 100K.
Check the Power steering for any nosie/hardness, suspensions and engine.
Can you post all the pictures/condition of Civics you are going to inspect?
I prefer buying from an individual, because they are genuine sellers.
If you cannot find a VTI in pre facelift model then go for the EXI.