bro... i already use U68 nearly 2 1/2 year and I still believe Umobile the best broadband provider (wireless)..
although been cap lately (i think starting in the middle of last year) but cap limit still reasonable at 10GB per month..
if u talk about speed.. Umobile really beast when downloading especialy from file hosting like hotfile etc (and i can reach in a few days ...

... but the highest download i ever did was nearly 120GB in 1 month - that time no cap limit although stated in their fair ppolicy...

... now tired for downloading.. only surfing, youtube and playing online games in facebook

)
700 ~ 800 Mb download taking around 1 hr only... normally download speed around 300 ~ 400kb/s or 2.5Mbps ~ 2.8Mbps..
but the cons :
1) cap limit at 128kbps when u reach at 10GB.. really slow and youtube should be banned. But if the cap remove, I can watch youtube in 720p without need to wait it buffering (but u'll easyly waste ur bandwith limit... so careful). Previously cap at reasonable 384kbps (50~60kb/s)
) coverage - go kampung2 n u'll suffer.. and some city area, coverage is good but still speed below than satisfaction (lucky my area maintain at high speed 24 / 7 eventhough there are few college & universities around)
yea... when is not capped, one word can replace all the cons "AWESOME, when capped, u just bear until 1st of every month ~ i'm heavy user, so every 15th i will be capped and have to wait half month...soon going to terminate UmB.