Never been an apple customer
But I do feel for those pros getting burned. What's worse is apple literally has more money in the bank than any other tech company so has resources to build a product that fills the niche of power users. I didn't pay attention to the event, seeing the macbook air get canned in this article is the first I've heard of that.
For whatever reason last night I was bored and spent some time reading comments on arstechinca about the new pros. Lotsa upset people who waited years for a lackluster update.
I recently upgraded my laptop after 5 years. It was a massive upgrade for me whether cpu or ram or gpu or storage or screen
Went from a 2011 era Toshiba Tecra A11 dual core i7 8GB 1600x900 Nvidia video with 512Mb and samsung 850 pro 512G(5.6 pounds), all the way to Lenovo P50 quad core i7 with 16G (upgradable to 64, don't see going past 16G for a long time), nvidia video with 8G a 1Tb samsung 850 pro *and* DUAL samsung 950 pro 512G (total 3 SSD and 2TB). Oh and 4k display (but due to windows 7 remote desktop and vsphere client being unusable in 4k I run at 1080p, works fine for me).
I fussed about with 4k for a week or two but don't see much benefit even if all my apps worked right. It just made everything smaller forcing me to increase things like fonts etc to compensate. I'm sure perhaps for media it is great, but for system andmin stuff I do it has little value (I do use 16 virtual desktops with edge flipping which provides far more value). I do not use external monitors either (never have).
But hey 4k is there for me waiting if I ever change my mind, same with 4 memory slots that can take me to 64G of ram.
New laptop weighs the same more or less same physical size. Old laptop was $2300 new one all in about $3500(company paid for everything but the dual 950 pros).
Both laptops stay in linux mint 17 99% of the time and dual boot windows 7 if needed for games, also run windows 7 in vmware for some work related tasks. ( you can probably guess how I feel about windows 10 despite knowing it surely handles 4k better than win7)
I'd guesstimate battery life in linux around 3 hrs. Which is fine it stays plugged in 99.876% of the time. Only complaint for travel is the power brick is more than double the size of the toshiba. I think the P50 tops out at 200W, though with normal usage with a kill a watt meter I saw about 55w total.