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