I have aquilla on my Mainland soprano and they are fine for that, but my Kala concert has Living Water and there is no comparison. Ken Middleton sells them exclusively out of the UK and he says they are bright. I never really knew what bright was until I tried these strings. Go for it!
Just ordered a couple of sets of Living Water and will give them a try. I loved the Aquillas but when I recently brought my uke in to Flea Market to have a pickup installed they changed the strings and said they now use Pro_Arte Strings (Clear Nylon J71).They work well and are thick like the aquillas but I think I prefer the Aquilas.
Will give the Living Waters a shot when they come in and will report back.