In reply to:
Please be aware, however, we do not offer technical support for modems/routers other than the ones we offer at our website www.talktalk.co.uk.
Actually, the only modems/routers that TalkTalk "officially" supports are:
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f@st 800
Speedtouch 330
Huawei SmartAX MT882
none of which are wireless.
If you purchase a wireless router, even one from talktalk.co.uk or a carphone warehouse store, and have a fault with it (any fault, even no synch), you will need to kick up a bit of a fuss to get past first line technical support (asking for cancellations often helps...). Alternatively, websites like
www.saynoto0870.com often have "better" telephone numbers that will connect you to a support rep who actually has more than half a brain cell
In response to the OP, so long as the router or modem that you purchase confirms it is ADSL2+ compatible (thats ADSL TWO PLUS, not just ADSL TWO) then in theory it should work fine with TalkTalk.
Good websites to check out for ADSL hardware include:
www.ebuyer.com
www.scan.co.uk
www.aria.co.uk
www.computerprices.co.uk
www.broadbandbuyer.co.uk
www.froogle.co.uk
Good luck