Despite it's fancy name, the Callaway Odyssey Marxman X-act Putting Wedge, is really a modern incarnation of the old chippers.
What is not old is the style and the performance of the club. The Odyssey Marxman X-act has a loft similar to a 7 or 8 iron so this is not a club for high flop shots. Instead it produces a very consistent chip and run type shot easily from all sorts of lies.
For those of a nervous chipping disposition it is perfect as you just need to make you normal putting stroke and the ball pops up and onto to the green. Perfect if you play a lot links golf.
The white hot insert gives good feel, but probably not as good as with a real 7-iron, so you need to decide if you need this in your armoury.
The head design just inspires confidence and the build just has that little bit more quality feel to it than other models. So if chipping is your weak point, the Odyssey Marxman X-act is the club for you.