Schweser/Stalla Flashcards?

Has anybody used these? Would you consider them valuable at all? I’ve heard both sides… I’m considering getting them to read as a quick refresher while on lunch at work or during some downtime. I’d likely buy the Schweser ones since I’ve been using their material and they are also priced at ~$50 less than Stalla, but wanted opinions on both. I’d also be willing to buy someone’s 2009 cards if anybody has them for sale. If not, then I’ll just get the '10 ones when they come out if it’s worth it. Thanks guys.