I was in the same position over a year ago in a way. I had a old MacBook Pro and was deciding if I wanted to get a Dell XPS 15 inch or stay with my MacBook. I mad the wrong decision and bought the dell XPS. I was going to create a new thread about going back to a MBP 13 inch, but I'll do it here.
All the Dell XPS was really good for was for games. Pure and simple. the built in Windows mail app is garbage and a pain in the a$$ to do anything since it was touch focus (IMO). Office didn't run differently or any other app that windows put out for both systems didn't work differently.
When it comes to comparing App stores, it depends what you're looking for. If your looking for games, windows 10 store. Apps, MacOS App Store. You will not find Spark by readdle, Airmail, or any other good apps that are on the Mac App store (besides password managers). In most cases, all the good apps will be available on the developers website. Which is disappointing as I don't trust buying software anywhere outside, the App Store....unless it is steam or GOG.com.
The much loved live tiles on Windows 10 are also pure garbage. Some work (windows built on apps), some don't (rss reader app from the windows store), and some are pointless (twitter). Honestly, the dock and notifications on MacOS is much, much more informative and useful than the live tiles and notifications on Windows 10. MS calendar looks like a dogs breakfast (IMO) and don't expect much from outlook from MS office if you plan to use that to sync your iCloud email account. Reminders are very limited if you use the built-in reminders app on IOS and the new MS to-do app will conflict to the IOS reminder app on IOS..especially when you do schedule times to remind you.
Hardware wise, it's a mix bag. the keyboard is good and the screen was really good (1080p FHD screen btw). The touchpad was good, but it doesn't compare to the macbook's touchpad. Why Dell put the speakers facing down is beyond me. They sound Ok, but I prefer what Apple did in the new MBP's. Because it makes sense and they sound a lot better. If you get the dell with the Nvidia card, expect it to get very warm have a laptop cooler or whatever (can't remember what its called) if you plan to have on your lap. Most important, get rid of all the Dell S**tty software off your machine. Guaranteed you will get blue screen or a yellow screen of death regularly (every 2 or 3 weeks..or sooner in my case at times). The Dell machine is fine now after taking all the Dell crap off..but it does run warmer (for some stupid reason that I don't know).
When it comes to battery, don't leave it on sleep mode, you have to turn off the machine all the time. I tried sleep mode at first when I first got the machine, never again. If if it was in the bag while on the go, I would have a very warm laptop when I took it out and little battery life left. Even when I close the lid at home and leave it on the table when I go out, I would have no battery life left. No problems with my new MBP. close the lid, it goes to sleep and stays cool on my table or in my backpack if I take it with me. Battery life pretty much the same when I open it up again (or loses a few % if I didn't open it up for a while) and the lock screen is waiting for me to use Touch ID or enter my password to unlock my machine.
Here's another thing, you will get phone calls from Dell trying to force you to buy their extended warranty. They called me asking if I wanted it and I kept on saying no as I will not give my c/c # over the phone to them. I'll put it in other way; they way they were talking, it felt that the machine was going to break down after my regular warranty expired. Couldn't find anything on their site that you could buy it online either (probably is though).
I spent 1850 on that machine and I wish I bought a new MacBook Pro instead. I'll keep it for games or when I need to use windows when I go back to college to keep my payroll certification and I need a windows machine).
You may be spending more for the MacBook, but you are getting quality, a much better running OS (IMO), and painless syncing between your IOS devices & MacBook Pro.
Laptop:
