I am using Streamyx 1.5mbps line, unplayable without tunnel (can't even log in if character is at Orgrimmar).

From what I hear from my friends using Unifi, they can play 300ms-500ms without tunnel. Apparently (not sure true or not), Unifi has its own bandwidth allocation and not throttled/package-shaping like Streamyx. So although operated by same ISP and supposedly go through the same undersea cables to the US, Unifi has 'higher quality'.

Will get my Unifi next month and post here again then.