All the lovely, minerally, Badoit taste, but "intensement petillante" (that's "very fizzy" for our resident monoglot europhobes). Easily the best sparkling water.
Volvic 90%
Possibly the best still water - can be an acquired taste but well worth the effort - I tend to think they've backed off the sulphur gas slightly these days, but that may just be my ageing sense of taste.
Strathmore (sparkling) 85%
My favourite UK fizzy water - good clean taste and lots of bubbles
Buxton (still) 85%
I resent this being marketed with the Nestle branding splurged all over it, but they don't seem to have messed with the product and it's (imnvho) the best still UK water.
Severn Trent tap 25%
It may be free (well almost) but it reeks of chlorine, is horrid to drink straight from the tap and poisons any decent scotch you add it to ...
... but it does make a decent pot of tea and, if you filter it, then it is just about OK for taking your medication.