i have a boss me 25 and a zoom 505ii. Do you guys have any ideas as to how i can connect the 2 to get a good sound? btw when you guys buy multifc processors do you use factory presets or do you make your own patches?
I don't know why you'd need to connect the two. There's not much to be gained by making them interact - they're very much meant to be standalone units.

Connecting them is as easy as plugging one into the other. Making them sound good is perhaps another story.

I usually find the factory presets on those to be heavily over-effected, for demonstration more than actual use. I almost always start by overwriting them.