Yes I have Be Broadband, get about 16mbps down, 1mbps up generally. Not too sure how far I am from the exchange but the speeds are about what I expected. (I'm about 2 miles from Southampton city center).
Pretty happy with them so far, no real issues. The router does seem to get a bit bogged down if you download at full speed with it though.
Price for Be unlimited has just been dropped to £18/month which is what we have, we havn't had any usuage restriction yet and have downloaded approx 80GB in about 3 weeks since we've had it.