i m a broadband reseller for maxis, celcom and umobile
1st you may check your coverage here
http://u.com.my/broadband/coverage-locationsunfortunately east malaysia got no U3g coverage, but i got a lot of customers from melaka and pahang that using prepaid 28 to roam on celcom 2g edge just for whatsapp and talkbox lite using =.=
selayang is not bad but also not too good, klang is not fully covered but last month TOP SALES with over 1000 broadband dealer is from klang ...... why not me T_T
2nd, if you near 20 floors above, all broadband also slow for you
3rd, if your apartment or condo is surrounded by 3-4 other tall building, i m sure you get no signals always unless YTL YES, as they put the signal tower almost each of the building ....
so thats just depends on your demand on the services, YES always the best choice if affordable, maxis also considered expensive compare to digi celcom and umobile, digi is the cheapes plan so better don complain the coverage and speed ...
my conclusion =.= : UMOBILE IS GOOD at klang valley especially PJ and kl sentral, might reach 9-10mbps with galaxy S2 hdpa+ speed