I have too many saves to count :# but two of my biggest ones are:
A rotational save with all premades. I play one week in each household and have aging on for the household I'm playing.
Some families are more fun that others but I generally come up with someone and make the boring ones fun to so I don't want to leave when the time is up.
I also really like that I do play with aging on in that save because I play with it off most of the time and from comparing that play style to when I have played legacies etc I feel like it is easy to miss out on things because the sims never age.
My other big save is one with all my favourite sims. I play whatever household I feel like when I feel like it and there is no aging.