well.......nokia 5800 is the worst coz its difficult to operate a touch screen. It looks cool but time consuming phone.

Sony is not a good deal to buy in qatar coz no repairs r there for it.

Nokia n79 is gr8 in looks n also good to operate with 128 mb ram in it....

So if ure a carefull user then go for Sony ........Else there is an option only for N79.....

N79 is the most durable of all the three phones mentioned.....

hope u'l find it usefull