JH, I've had a lot of experience with all the styles of Killing Fields mats, but I've also modified them along the way too.
The original teddy bear fur style has good pile but the color is a little dark. If you can shave and dye yours, then the results can come out nice -
Some of the masking needed to make that field pattern above -
A more traditional variation of a KFM fur mat -
Here's their 1st version of the 'static grass' style (on black fiber backing - which I gridded out for playing C&C Battle Cry games with) -
My preference of the three - the traditional teddy bear fur style. It's durable, conforms to hills underneath, and can be modified if you venture into that.
Next
favorite, the 1st (fiber-backed) static mat - still, it sheds its grass all over, so not the best type for travelling to a show with.
Lastly, I don't like the 2nd style (rubber-backed) static mat at all. Perhaps the move to a rubber backing was for better adherence, however the rubber material is stiff, and doesn't conform well if rolled up and then placed out on a table. Maybe it'll be ok for more permanent [flat] deployment, but my mats must travel and work "out of the box". Be careful if you buy the last style too, because the mat is rolled up and bound with shipping tape in its box, and even if peeled off carefully, the tape will still pull off some of the static grass with it.