need bulk

Whats up guys. Im wondering what i should take to bulk up. Ive been cycling win and let for about a year now and i think its time to take it a step further. If anyone can give me advise it would be much appreciated.

height- 5-11
weight- 190
body fat- 8%
10 year veteren bodybuilding.

Thanks guys.

Ive been thinking about Deca or maybe trem but i need some suggestions. My body is use to using so i think i should be able to handle a 2 week cylce with my win and let at the same time.
Thanks alot guys. :)