If you are not capped under their FUP, do you know why your connection is slower during peak periods?
I assume it's just because of exchange/central congestion. I don't watch my download rate like a hawk, as I don't need fast downloads most of the time, so I don't have any really useful stats on when throughput goes bad, or how often. Looking at the latency monitor I was getting periods from midday to evening where minimum latency would double. That seems to have abated a couple of weeks ago, so either my central has been switched to a quieter trunk or my neighbours are doing less.
I'm still on the old ADSL basic 8 Mbit service. Rumour has it that's being starved of central capacity as LLU rollout happens. My local exchange is due for C&W LLU presence at the end of April, but it isn't on Demon's schedule of upgrades yet. BT have also slated it for special treatment for a rural 24 Mbit fibre rollout in the next 12 months, but I'll believe it when I see them digging on our side of the river.
Demon since forever, HomeOffice MaxDSL since 2006 via Netgear DG834G router
Mac Pro 2.66GHz 4GBytes / MBP 13" - Snow Leopard plus Centos4 & XP Pro in Parallels