As Nixy has already mentioned Blue Burmese, Burmese are very intelligent, inquisitive, rather inquiring, love attention, much quieter than Siamese (aka bigmouths of the cat world), quite a family orientated cat, they will follow you around, inside or outside, they're generally good hunters. Blue or Lilac Burmese are in general much more docile than say a red, cream or seal, or cinnamon Burmese or Siamese.
http://en.wikipedia.org/wiki/Burmese_%28cat%29
http://www.burmese.co.nz/Previous%20Litters.htm
Another derivative is the Tonkinese, which are quite similar in nature to the Burmese. Fabulous cats. They're not as common as Burmese either.
http://en.wikipedia.org/wiki/Tonkinese_%28cat%29
Often in the cat world, darker pointed ones can tend to be a bit scatty. Not always, but quite often.
If you get a pure breed anything, don't overfeed it, keep it lean and healthy.
My folks, breed numerous breeds of cats when I was a wee nipper.
Thanks for that Bronzee, yeh I know Siamese are a nightmare, my mum has two siamese and two orientals, so loud and demanding they dont shut up lol
Tonkinese look like little stunners, just contemplating about getting a cat, with the dog I can lock him out of certain rooms like my editing suite, with a cat may prove harder to do, last thing I need is a cat sitting on my keyboard, will give it some though
I was once in a conference call with my big boss in Paris and my local management. They asked why I was screaming 'b**tard!!' down the phone. It was because my cat walked across my laptop and stepped on the power button. They had to wait for me to reboot before carrying on.
butter wouldn't melt in my cats mouth though!