Get a screen protector ASAP. I bought the kit for my 7" tablet and did not put it on right away. Used the stylus that came in the kit and noticed marks on my screen. They sort of wiped off but not completely. I have the SYNET7LP-DS model and I can type on the screen with just using the tips of my fingers (no fingernails needed). It seems sensitive enough to not have to push hard to type either.
I picked up a 2 pack of screen protectors 'designed for the Nook Color' at Best Buy. The protectors are a little bit larger than the screen of the sytab7mx which is what I was looking for. The screen feels sturdier now compared to before. I mostly use my fingernails on the screen so far. Also, I was given a Belkin Tab Folio designed for the Nook for Christmas. The Sytab7MX fits just fine, except I have to undo one of the corner loops in order to charge the device.