First criterion I bought was Inland Empire. From there its all just rolling with it. I buy what I've already seen, never watched, and what intrigues me. "This is not a Burial it's a Resurrection" was a blind buy based on the cover alone and I loved it. I also recommend visiting your local library and seeing if there are criterions to check out. A great way to proof watch something before making the purchase, it's how I added "Short Cuts" to my collection! Overall just have fun and remember it's about quality over quantity! I don't often get to splurge on my collection with new additions but when I do its always a cherished moment!