I bought the Samsung 500GB 850EVO and swapped out the 128GB stock SSD that came on my new XPS13.  It was less than $200, took less than 5 minutes to install, and I now have 2.6 SECOND boot times.

I highly recommend it.

I ended up getting the 850 evo ssd. My laptop came with windows 10 already installed on it. If I install this ssd I won't have an operating system anymore as I wasn't given a recovery disk or a product key for it. Is there anyway to get my original factory windows 10 onto this ssd?

You could download AOEMI disk backup (free version) and clone the Dell hard drive with Windows 10 to the new SSD.

I would do it this way.

1. Make a disk image of the Dell hard drive using AOEMI to an external hard drive (just in case something goes wrong, you could restore it)
2. Take the Dell Hard drive out. Go to a desktop PC and connect it to an available SATA connector.

3. Connect the new SSD to another available SATA port on your desktop PC

4. Run the AOEMI disk backup program and clone DELL to SSD (please go to Edit partitions and make sure you select "Make all partitions fit the entire disk")

Clone the drive and when done, remove it and install it on the Dell laptop.

Once you boot up, you should be in business.

Alternatively you could buy NTI Echo Cloning program (about $20) and use that instead of AOEMI.

Hope this helps.

Windows 10 has the inbuilt feature to make a Recovery Drive:

http://dellwindowsreinstallationguide.com/windows-10-rtm/creating-a-recovery-drive-and-using-it-in-windows-10-tutorial-video/

You can alternatively download a Windows 10 .iso to make Installation Media:

http://dellwindowsreinstallationguide.com/download-microsoft-windows-and-office/download-microsoft-windows/download-windows-10-oem-and-retail-iso/

http://dellwindowsreinstallationguide.com/a-clean-install-of-windows/a-clean-install-of-windows-10/windows-10-clean-reinstallation-via-bootable-usb-from-iso/