http://www.techradar.com/news/world-of-tech/roundup/10-best-touchscreen-laptops-in-the-world-909937 is 2 years old and lists the best touchscreen laptops available then. There surely are more now.

Even if they come with Windows 7 at the moment, you get a Windows 8 upgrade for $15. So there is no good reason to wait another day, provided the shop gives you a warranty that it is Windows 8 compatible and will accept a return if the upgrade can't be installed or the touch screen doesn't work in Windows 8.
You'll love even a Windows 7 laptop, if you compare it with a clunky old Dell desktop.

Kees