[LAU] Laptop for realtime audio

I'm thinking about getting a laptop, and of course I want one that I can run jackd and friends on with reasonable performance. I really don't know much about hardware in general and laptops in particular, so I was wondering if anyone had any advice. This is what I'm looking for: * Mainboard / sound / CPU etc working well with recent RT-patched kernels. * S/PDIF out, at least 16 bits, 48kHz, stereo. Inputs are not important, ADC/DAC quality is not important. * DVD+-RW burner. * jackd running without xruns with ~10ms latency (when using S/PDIF out at 48kHz). * Room for plenty of RAM (at least 2 GB). * Not too expensive ( < 1000€). Any suggestions? --ll