My 2015 MBP opens to 120° which seems like it'd be enough but I haven't purchased a stand yet so I'm not sure. Good to know since I've been looking at the Rain stand, which looks like it's pitched at 30°, so the laptop screen would be perfectly upright at most, as shown in images of the Rain stand: http://cdn1.bigcommerce.com/server800/c1529/product_images/u...
Not sure if that'll be okay, it is helpful to be able to angle the screen backward a touch if you're close to it and higher than the screen. That's probably less often the case with a stand since the laptop will be higher but helpful to keep in mind.
I'm a bit near-sighted so I prefer having my monitor somewhat close. That's especially true with a laptop, since the screen is smaller. However, if you're not near-sighted, then I suppose a MBP that opens to 120° might be fine.
Not sure if that'll be okay, it is helpful to be able to angle the screen backward a touch if you're close to it and higher than the screen. That's probably less often the case with a stand since the laptop will be higher but helpful to keep in mind.