what are your current router stats?
put your download synch speed, noise margin and attenuation into here: http://www.farina1.com/adsl/
I haven't used talktalk directly but their phone support is renowned as being dire (online a bit better i believe). Bear in mind you'll have to move your phone line over to them too (full LLU) and currently to move back from a Full LLU product involves a cease and reprovide i believe.
Like you our choice of LLU is limited to talktalk only. I recently migrated to vivaciti LLU variety package (vivaciti are a reseller) which uses the talktalk equipment at the exchange but i can keep my phoneline at the post office (i route daytime calls through 1899 for cheap daytime calls) and it's a one month contract. More expensive than talk talk but you do get what you pay for i think.
edit: should add that i think there are other resellers with talk talk llu products..adsl24 or xilo/uno i believe.
Edited by andrewdb (Mon 05-Mar-12 20:51:36)