Uncanny X-Force #1-9 (vol. I)
I'm not sure on the exact lineage of X-Force, but this team is Wolverine, Deadpool, Psylocke, Fantomex and Archangel. Created as the "Secret X-men" black ops team.
The first four issues move fairly slowly, as they go to the moon to find and kill a re-born Apocalypse.. who turns out to be a little kid. Fantomex takes the kill shot and since this involves time-travel and cloning, this seems like a throwaway story. But it has lasting effects, as it turns out Apocalypse has effects on all timelines and killing the kid may have sped things up. Oh yeah, this same murder is the one that recently pissed off Captain America in "Uncanny Avengers".
That's followed by 3 issues of dealing with Fantomex's home of "The World", which is taken over by zombie cyborgs of Marvel heroes, from the future of course. Deathlok helps them out and hangs around for awhile. This arc kinda' stinks, unless you really like Fantomex.
Up next is a quick request from Magento to kill an old Nazi in Argentina. Very similar to "X-Men: First Class" (the movie). Then a quick run-in with the Shadow King, who unhinges Archangel's "dark side".
Things really pick up as they find out Archangel is now the "Heir to Apocalypse". They break out the Dark Beast and hop to the "Age of Apocalypse" timeline to find a cure for Archangel. Sure, it's the usual alternate timeline heroes bullshit, but there's some good stuff with the Celestials mixed in, as it turns out Apocalypse just may be like a mini-verison of Galactus and a necessary force of nature.
Well crafted use of the existing plots. It's not just "let's do this and see if it catches on", as the plots seem to all gel and flow into each other, after the arc with The World.