Pen bought from Amazon works great with the 800
After our parrot used the original pen from my 800SG as a chew toy and I couldn't find any penabled pens locally (funny thing is, it is made in Taiwan!) I got myself a new one from Amazon. 9mm thick for about US 27.-. feels much better than the original super thin version. It just arrived yesterday and I am finally back to navigating normally.
Just to let those of you who have damaged or lost their pens. Now, does anybody know where I can still get the luxury leather cover? I always put it off and then Irex went into chapter 11.