uswitch doesn't want so much information - i did not create an account , can just enter a neighbours address, and it keeps the info in browser cookies.I've been trying to compare tariffs but they all seem to want a bunch of personal information so they can spam me or do god-knows-what with it.
... but yes you have to copy the unit rates into a spreadsheet to see what's what. (but I suppose <1% of population use excel)
edit: migration from npower->bulb now complete.
npower final bill curiously charged me my old tarif rates(much better than bulb), as opposed to their std tarif, even though tarif ran out end of june