Focusrite is the way to go. I use the saffire pro 40. It comes with a zero latency mixer that is an app on your mac. It runs inbetween the interface and
Logic Pro X. Now, if you don't want to use it, you can just use the interface with
Logic and not use their inbetween mixer, but once you get more stuff and want to input and output a bunch of things at once their zero latency inbetween mixer is great software to have. It comes free with their interfaces.
Their interfaces also come with
a plug in suite that works for Logic Pro X. You just download the plug ins, open up Logic, it will find them automatically, and put in your key to activate them.
I wouldn't use anything but Focusrite. They have good pre amps in them and like I said the mixing software plus a good plug in suite makes it even better.
If you want to record drums, go ahead and get the saffire pro 40, it has 8 XLR pre amps built in, and a ton of outputs. It has more inputs than 8, but only 8 when dealing with it's own pre amps. You can connect other pre amps via adat and add to it. Or if you're a guitar player you can use
Axe Fx, or HD500 or anything like that, plugged into it via SPDIF and not use one of your inputs that way.
You should have no latency issues. I have no latency issues even when I'm not using their no latency mixer software. But the saffire pro 40 is a firewire interface. Firewire will go into the thunderbolt adapter of a mac. If you get a focusrite USB interface and you only need like 2 or 4 pre amps you should still have no latency problems at all. Especially with a new mac. Any of the new mac's, even the lowest price one should have no latency issues.