If you cant successfully gain any weight without ph's you wont gain very much without as your diet will be holding back in both situations. Best things to stock up on imo are
1test and 4ad powders. A lot of people are stocking up on
m1t because its cheap as hell, I choose not to use it. I have also stocked up on mohn due to some killer deals and a lot of people love it. I suggest doing some research because you will get different opinions from everyone. The prohormone faq gives a lot of detail of all the ph/ps's, check it out and figure what you think is best for your needs.