hey guys. im SM kid. i am pretty much a noob at 40k but i l ove the game and expect to play it for a while. i need some advice. i have an 800 pt space marine army. my little bro has a 750 tau army. we both want to make a larger army together. we are interested in eldar and the necrons. we also have a limited budget. need some expert help on what to pick! thanks for all your help. im on summer break for the next two weeks so try and answer this by then. thanks