We don't do a lot of streaming other than radio every now and then, and the odd youtube. Normal browsing and email etc is fine, no complaints.
As long as you are aware about the traffic shaping there should be no suprises - I was taken off guard with the shaping, expecting my p2p and ftp to be just the same as on my orginal provider.
Being more aware of it now I have no problems with the traffic shaping, I just do the bulk of my downloaded off peak - best times seem to be after 1am sometime, till after 7am sometime. If you can be patient and schedule your downloads, rather than expecting them straight away then I say go for it.
Totally converted here and no thoughts of changing back to my original provider (xnet/WorldeXchange FYI)