This is a great thread; thanks for the effort!
I've been torn between the 2 also. It seems the 15 has everything in its favor, except for the size, portability, and the sleekness factor... especially when pulling out the laptop on the go, the 13 may be considered a bit less obnoxious depending on the circumstance, and this FEELING is a real thing to consider. I've been at dinner table meetings where I was really glad I wasn't engaging my old 15" tank on the table. The 13 has been great to move around with, and I always appreciate the way it looks and fits everywhere, every time I look at it. However, the 15 is built small enough that it fits in my 13-inch backpack, and 1 pound extra is not really noticeable. Bigger screen, better speakers, longer battery life, much faster, discrete graphics for my mapping programs... and the 15 is the winner.
The main consideration for me is the screen size, as I am not seeing tiny text as clearly as I used to, and I find myself ducking toward the screen. I compared the 2 models at the store side by side. I like to run More Space (1680x1050) on the 13, as any less is just not enough space, and this leaves things a bit too small. The Default on the 15 is 1680x1050, so I see EXACTLY the same amount of text/graphics as the 13, but everything is larger proportionally: large enough to see it clearly. And, the More Space setting on the 15 really adds a good amount more acreage, if I still want to squint a bit when I need even more space. I kind of have the best of both worlds with the 15. I’ve had the 13 for a year, and am now moving to the 15.
I use a 28” monitor most of the time as an extended desktop at home. It's great to sit down at my desk and hook up to a USB dock, charger, ethernet, and 4k monitor WITH ONE PLUG! I still use the built in screen at the same time, and I often feel like I want another monitor because the 13 is pretty small (tiny text, and lower down) at my desk. I think the 15 will alleviate most of that feeling.
I have never been left wanting while transferring big files from the "half" USB ports on the right side. I get the same 300-400MB/s transfer speeds in and out and across no matter what ports I hook my high speed external SSDs up to.
Also, I am ASTOUNDED what I can do with the MBP 13 TB 16GB i5 2.9. I can seriously have some stuff going on, and it just does it all: Parallel's Windows 10, multiple browsers, multiple Excel, Word, Numbers, and Pages docs, multiple web and local videos running (just for testing), Google Earth... it just keeps it all afloat very comfortably. That being said, I know a quad core with discrete graphics will be a bit smoother and quicker, especially when panning around detailed 3d maps.
As far as the Touch Bar goes, I LOVE IT. Besides the fingerprint reader, which I consider mandatory after having them for so many years in Windows, I love being able to configure this very flexible toolbar to my liking: screen capture, volume and brightness SLIDERS, mute, lock, sleep… whatever. I like it so much more than function keys, and its so much more useful. I don’t yet find myself, after a year, using the app specific features that much, but it is so useful even if I don’t. With all of the negativity about TB, I hope Apple keeps it around. It is a definite addition to my computer use, and I am not enamored with decades old function keys; this is a step forward in my book.
I consider myself a power user. Portability is sexy, and it feels good. Despite all of the power and capability of the 13, I still feel like I am making a compromise 95% of the time I am using it, even though much of my power work load has diminished. I used to love sports cars (Firebird, aka a bit cramped) for a daily driver… now I would rather drive my X5 anywhere. I’m still drawn back to the 15 size and performance. Thank goodness the MBP 15 TB is still 3 pounds lighter than and half as thick as my old Lenovo T530, which I traveled all over the world with.
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Does anyone here run Final Cut Pro X on their MacBook Pro? If so is there a big difference between the 13” and 15” when it comes to running Final Cut Pro X and editing footage?
I have not run FCPX on my 15 yet, but I couldn't imagine it running any better than it did on the 13. Of course, rendering is a different story, and the quad core will likely do it 1.5-2 times as fast... actually using it though, FX, cutting and editing... I never noticed any lag on a 13 TB 16gb i5 2.9