Baumix: Great as a blender etc but it also allows me to buy whole spices and use the spice grinder attachment to grind them, either as needed or in batches for the regularly used ones, I find it really makes a difference to use fresh spices in my cooking in terms of depth and punchiness of flavour.
Global knives: Just having good knives makes a world of difference, although I have to say I am disappointed by the bread knife and am looking to replace it with a Victorinox pastry knife for some uses. Make sure you have a decent chopping board (non-warped wood) and non slip mat for underneath though or you are missing out.
Silicon utensils: they are truly awesome and never again will you have your better half melting those plastic ones in hot oil (they also clean up really easily).
Sous Vide Supreme: I got this about 5 years ago and it is still going strong and is so versatile, as well as sous vide you can use it for making stock, yoghurt, ice cream bases, creme brûlée etc..
Kuhn Rikon pressure cooker: makes amazing stock and although it isn't cheap it is built to last a lifetime.
Decent thermometer: I have a Thermapen and just picked up a wireless Mavericks as well, useful for consistently in everything from meat to bread to cakes.
3cm thick Corderite pizza stone: Great for pizzas and baking bread, these are what they use to line the kilns they fire clay in and not the usual crappy pizza stones that are highly likely to crack on you. May be damaging to your waistline though
Decent peeler / mandolin: they don't have to be expensive ones but can make your life a whole lot easier.
Electric scales with tare function: just makes things easier and much more consistent.
I have been planning to get a Thermomix for the last few years and think I will probably grab one in the next couple of months now the new model has been out a little while, it should let me clear some counter space and give me much more options in cooking. I will let you know if they are as good as they are cracked up to be
