Unless it's a Stalker...
I'm as <_< about KM on other ATs as anyone, but on a Stalker it's enough fun that I main a KM/Bio.
That said. I hate... absolutely Can. Not. Stand... Staff Stalking.
I leveled a Staff/WP Stalker to 50 over on Paragon, but somehow between then and now, I'd managed to forget just how much the complete opposite of fun-to-play I found him. So, like a fool, I recently started another one here. He's 40 and I'm about an inch from just deleting his whiffy, annoying butt. 😫
My Staff Scrap? I like him. I had good fun leveling Carwyn.
The Stalker? Errff. No thanks. I'll go back to my KMs any day of the week.
I've also had miserable luck with Archery Sentinels and darn near ANYTHING Dark Armor.