How Far Will Your Collection Go?

i was just reading a thread (about MMC's overlord) and as i was forming an opinion which would ultimately lead to me buying or skipping it, i thought: wait... do i even need this?
im collecting all beast wars/beast machines, and masterpieces. with that, G1 and their classics counterparts. but it occurs to me that i havent thought how far the G1 collection would go. in general i never thought of it going past the american rebirth, because if i decide to go the headmaster/victory/masterforce route... oh man is that a LOT more toys. not only that, more expensive and harder to find.
im contemplating doing a AEC/animated/prime collection as well, but thats far off.
so how about everyone else? where does your collection start and end?
im collecting all beast wars/beast machines, and masterpieces. with that, G1 and their classics counterparts. but it occurs to me that i havent thought how far the G1 collection would go. in general i never thought of it going past the american rebirth, because if i decide to go the headmaster/victory/masterforce route... oh man is that a LOT more toys. not only that, more expensive and harder to find.
im contemplating doing a AEC/animated/prime collection as well, but thats far off.
so how about everyone else? where does your collection start and end?