exi...good fuel consumption...
vti...depends on the driver...if the rpm is below 3900 then its fine...above 3900 rpm, vtec somes into play...
u could easily feel a difference in engine's sound,speed and fuel consumption too...ziada chalatay rahay above 3900 to bas fuel ki sui dasti neechay aai gi...
general differences are...(2004/05 models)
Exi 1500cc engine,Fabric Seats,No Rims
VTi 1600cc VTEC engine,Fabric Seats,Rims,Retractable Side Mirrors
VTi Oriel 1600cc VTEC engine,all options of VTi plus a sunroof
VTi Oriel UG 1600cc VTEC engine,all options of VTi Oriel plus leather seats
10 CD changer comes with every type...
prosmatec is the automatic version.