I am in Southern Suburbs, Cape Town.
My experience since I have moved up to 1mb uncapped shaped has been fantastic. I do 25 man raiding in WoW and this I feel is a valid benchmark for latency sensitive applications.
So far, I have not lagged out once on MWEB and I have even noticed improvements on some fights. For example, Nefarian / Onyxia phase 2 (when lava rises), I used to see all my guildies on the platform before I could even start swimming up due to lag, last night I was swimming up with them! This is most likely due to having more bandwidth to handle environmental positioning in game.
Downloaded RIFT trial, got full linespeed and the 9 gigs worth of patch took me 2 nights (12am-7am on first night and 12am to 11am on second) to get. Impressive.
News servers / Torrents dont run at full linespeed most of the time but I do understand the need to have those shaped.
Is it worth it? Hell yeah.