After installing the Samsung 850 EVO 500GB SSD in the desktop, it went so well that I decided to instead put that one in a laptop, and ordered another 1GB SSD for the desktop. I used the cloning method, using an Apricorn USB 3.0 adapter, which came with a CD for an easy to use cloning utility. Cloning 240 GB of data took 59 minutes. The Samsung SSDs come with a CD to install some sort of utility, but I'll tell ya, I couldn't figure out what it was supposed to do; I didn't see the term "copy" or "clone" anywhere. I highly recommend the Apricorn; you can even opt to not transfer your data files.
The only quirks I saw, and it happened all 3 times, was that System Restore points didn't make it through the process, probably because the settings all changed. "C-drive" System Restore was "off", but Recovery and secondary internal drives were now "on". Not a problem, but it's something to make sure is checked and re-set up. The other thing is Google Chrome lost it's extensions (only 2, AdBlock & WOT) and homepage settings - for some reason. Also, expect saved cookies to disappear.
It's certainly all worth it. Start-up time went from 1.5 min to 23 seconds, and everything else is quite snappy. One oddity is that although a cold start-up is 23 seconds, coming out of hibernation takes 29 seconds.