I tried a set of Elixirs, The sound is OK, but nothing special. It's too soon to say how long they will last but they got to looking dingy after a week or so.

I was thinking of getting a batch of generic strings and putting together some biased sets to suit different guitars. Using heavier strings in those areas where the guitar is weak.
For example, my old Yamaha could use a little help at the low end. Perhaps a heavier gauge on the 5th & 6th strings would help.