I'm presently using a 5320 ... its the cheapest symbian u can get ... 10k .. the only disappointments wid this fone for me are poor battery backup , smallish screen , cramped keypad(compared to my other two fones , se k550 and 5610XM) ... apart from tat , its gr8 .. so if u want symbian , tis is the one ...
if not , u can go for se k790/k800 (but thsese are really old fones) ... no flash lite support also ... instead , if u want an se , w580 ... good fone ... great bundle ...
I wudnt for once think bout the e6 ... instead , if u are looking for rokr series , try the em30 (like e8 wid a morphong keypad) ... but steer clear of moto as most of them lack support for 3rd party apps ...
u can try the f305 for gaming , but i wud recommend the 5320 instead ... althought the 5320 doesnt have motion sensor(like the f305) , it does have support for n-gage games (which are way cooler)