A 6900 is just one line of semi sneak poses from one supply company, no different than the bazillion other semi sneak lines from other supply companies.
In other words, you should ask your taxidermist for a semi sneak pose, and let him/her decide which supplier to get the semi sneak form from.
6900 is a decent looking form, however Ohio Taxidermy Supply has one of the best semi sneak forms on the market, if I get time today I'll try and post up pics of it! They won best in world with it in the sculpting division
ive done a few this year but none on the 6900 forms but my friend who works with me did 1 on them and i can say i will be mounting my buck i shot this year durning the rut on one, i really like the neck swell and muscle defition in them very nice form for the price
Here are 2 that I did on 6900. I really like this form, right now its my favorite but these are the first two deer I mounted. I want to try a Ohio Taxidermy Supply form on the next one. Sorry for the crappy pics but I took them with my phone since its easier for me to upload.