i dont know how to send private messages so i just ask here. as destruction /demo which fights do you play destruction on. and on hv horri is demo better than destruction=)?
Find a thread he posted in, click on his name and choose "private message". No need to create a thread to ask a single person a question.
Also, I know it's nothing of my bussiness, as your questions are directed at Brusalk, but maybe put a little effort into finding your answers first, before asking for them. Brusalk has a whole Destruction guide, which is stickied here. Through that, you can get to his youtube channel and find out for yourself what specs he plays and how he plays them.
Not to mention that what any player chooses to play on any given fight shouldn't be a guideline for you. If you were terrible as Destro but awesome as Demo, you'd probably do better raiding as a Demolock (and vice versa).
PS: Also, how you got to 267 posts without finding out how to PM is beyond me :-)