Hi Will@Mweb, just some feedback on my raiding experiance so far on 384k. Firstly, my US noise margin issue is fixed now. It is currently at 12db and its not dropping down to 3 anymore. Secondly, my ping is actually higher when I use BattlePing, about 250ms home and world, compared to 190ms home and world without a proxy (more or less). Also note that those pings are in 5man dungeons and while questing, not raiding. Talking about proxies, is the WTFast keys you are handing out the basic ones or the advanced ones, and my I have one also? 
On the raiding front it seems that only boss fights are causing me to DC, on trash my latency seems fine. Also, I have tested raiding without any addons installed just to confirm if it is any of my addons that are causing my DC, but I still get DC'ed alot. I have tried everything. The only last option that is left would be to upgrade my line to 4meg, but my budget would not allow it
Note that all raiding tests was done in a 25man enviroment, not 10man. Will do 10man raids on my 384k line in the next few weeks for testing purposes.
On the raiding front it seems that only boss fights are causing me to DC, on trash my latency seems fine. Also, I have tested raiding without any addons installed just to confirm if it is any of my addons that are causing my DC, but I still get DC'ed alot. I have tried everything. The only last option that is left would be to upgrade my line to 4meg, but my budget would not allow it