Apologies for not posting sooner, but with one thing and another I only got to test my applicator the other day.
I use coins to mount my figures on, and so I attached the clip directly to the edge of the coin, not sure if this increased the amount of static but the results were great. All the grass is standing up in a neat little bunch. I'm not sure the difference in results between my £14.99 applicator and the more expensive models, but to be honest, I can't see how you could get a better result, I'm really impressed.
I think out of interest I will try it out on a wood base later and see if the grass stands up as well as it does on the coin.
I had planned to post pictures but I can't get my camera to work, looks like the thing is knackered. If I do get it working, or if I can borrow a camera from someone, then I will post up some pics.