For acoustic in particular Iíd recommend trying to build up to a medium set (.013-.056) - they sound SO much better than light gauge strings! Once you are used to them itís not much harder on your fingers. I say the same for electric although w amps and pedals there are many more variables and maybe itís s bit less critical. I like my strings on most all gtrs to be quite heavy.
Anyone who says they canít hear the difference is either not listening or simple unconcerned w such things, which is fine too.
Regards, seasons greetings etc