I had the K2 Maysis and they are well made boots. If you like how they fit and you want stiff boots then those are perfect. I ride the same features as you stated but with a little extra. I thought I would need stiff boots so I bought those but I found out that I like a soft to mid flex boot. So honestly it is personal preference and the style you have. But most people that ride powder, trees, groomers and natural hits usually like a stiffer boot. You will have to find out your own personal preference and the K2 is a good start.
How would you judge/describe the flex of your previous boots? And what do you want different or the same from your new pair?