In reply to Gav89:
Most modern axes are pretty good, some are just made specifically for certain things. Here are some thoughts:
The Apex/Quark/Viper are decent 'all around' choices.
For Scottish mixed I would use T rated mixed picks as they last longer and are a little less flexible.
For ice I would use B rated ice picks.
You don't 'need' a hammer. I climb with a pair of BD Fuels without a hammer and just use the side of the axe for bashing things. Having a hammer will save some wear on your tool.
An adze is useful for clearing snow and ice. I find it scary having a big blade near my face when I climb harder mixed so again, I don't have one on my climbing tools.
For alpine use, or Scottish walking/scrambling (where you aren't waving your axes above your head) an adze makes it more comfortable to hold, easier to self arrest, and obviously is useful for digging/clearing. The straighter the shaft, the more useful the axe on easier terrain.