Zek , thanks for the useful info, i've been wondering for few weeks wither to get my router replaced the one i was using before it was great in some respect however the one before it wasn't N , so i decided to use it, i use
http://www.speedtest.bbmax.co.uk/ , which i find to be the best around , my speed varies between 60mbs + sometimes 90 but not stable on 90 , the upload is always bang on 10mb up tho for some weird reason, tho so i think i'll get new router as to your suggestion before, phoning up to register the new superhub when it arrives to see if theres much of an change.