I put in Caesarstone Blizzard tops and absolutely love them. I got them through The Great Indoors. They have had everything from red wine, cranberry juice to pasta sauce sit on the overnight and can easily be scrubbed clean the next day. As far as scratches go, I find they are fairly resistant, I haven't had a problem with them at all, granted I feel like you should be as careful as you can and continue to take care as to not cut on them. I did scratch mine while cutting a loaf of bread once, but other than that have had no major issues.
I wouldn't see how it would be more of a pain to install? Possibly they are worried about their craftsmanship and making the seam unnoticeable. For the most part I was dissatisfied with the installation of mine, save for the seams. They actually turned out well.
If you have any questions let me know.