I use different spin for different surface.
About 35% for clay, 25% for synthetic, 15% for fast hard, 10% for grass and indoor
Of course I am a powerful baseliner who likes to attack a lot, but my point here is that you should adjust your spin according to the surface you are playing on.
Singles Titles and Finalists:
250: Kuala Lumpur '15
Challenger: Georgia F1 '14,Wroclaw '16
Doubles Titles and Finalists:
GS: Australian Open '15,Roland Garros '15(RU)
Masters: Paris '14(RU),Madrid '15(RU),Rome '15(RU)
250: Kuala Lumpur '14,Doha '16