Only get DLC that actually adds content, like missions or characters, not weapons, items or maps, unless they were like the magika DLC, for like a dollar. I paid for the DLC to ME2, added a few more hours of fun, was worth it.
Thing pisses me off is the bioware points crap, like you have to buy points then use the points to buy DLC, WTF, and the points required arent round numbers, so now i have like 75 bioware points i cant use that i paid for.
Seriously bioware, fuck off the shitty "points" bullshit, its a waste of time and i doubt i will be using it again.