When you get your 'smacking point' as I refer to it (when you change the tunes over and mix and the next tune comes in as such). How do you get the tune you are mixing in to be the more dominent tune ie.

Swapping Basslines
Swapping Gains
Using Filters
Eq'ing to an effect
Using Channels

What ways do you people find the most effective way to make the mix in tune come in with an effect?

I tend to switch bassline, then a bar later take the gain down on the tune you are mixing out of, then take the mid out of the mix out tune and then fade out slowly till you remove the track.

Your thoughts on this method, and your most regular method?