to be honest i thought the epic was pretty mint, but i ran out of it and as it was winter approaching i just got some wet lube instead, so havent actually used the epic stuff in winter, we had a decent summer so i didnt really test the epic in mega wet/muddy conditions
im gonna try the white lightning wet lube first, like i said was impressed with the epic and dry version so may as well try the wet version for winter, looking at their chart it still suggests it will be relatively clean
http://www.wiggle.co.uk/white-lightning-wet-ride-synthetic-lubricant-120ml-bottle/
chart above suggests its what im after without being tooooo gunky, the other two i can vouch for as they kept the drivetrain clean through summer using either, so wet one may be a bit more gunky but cant be that bad compared to some other brands, im often washing and cleaning the bike anyways so that isnt too much of an issue, just want something that will stay on for all of the ride and help to clear out the grit etc a bit quicker