I used to have a separate large breaker and various tools, but trying to save space for my smaller backpack and have less rattling around I got a Topeak multi tool. Think it's the Hexus. Has mini chain breaker that works well and most the main tools you need, including a T25 (which SRAM are a fan of on some of their stuff). Also has tyre levers snapped into the sides which is neat.
Decent quality tools in my opinion, if small, though I did round off X0 pad pins, but I've done that with good quality heavy separates too. Soft alloy pins that get stuck with mud and whatever vs hard steel tool. I've given up on those pins now and going with good old split pins (though this means having some kind of pliers also, but there are good mini ones about).
Have used the chain splitter a number of times and found it easier than the separate one I had. Plus I've managed to use it to successfully push a removed pin back in.
The compact multi tools can be a bit awkward adjusting stuff like seat clamp bolts as the bulk of the tool often knocks against the seat post when rotating. Depends on the clamp bolt arrangement. Likewise with a few other fiddly areas.