Hello I order a pro pack last week. I will also be ordering the new arms. But my question is what other stones should I buy?

Welcome to the forum!

The answer depends on what your knives and needs are. You may want to look at the "Need help picking which kit..." thread...
www.wickededgeusa.com/index.php?option=c...d=4530&Itemid=63
some of this was just discussed. If I was going to add anything, it would be the Micro fine ceramics... I'm finding these stones are great for setting up the edge for the leather, but also as a finishing stone, leaving a crisp edge with some "bite" to it. Other than that, you may want to see what results you're getting, and then decide from there!

If you have a specific situation, post it, and maybe there's a more precise answer.

Have fun!

Thanks for your help I will check it out.