Choosing an sd card is not complicated. I've never spent more than $5 for one (always get them on sale), I have more Sandisk than anything, but I'm not sure the brand matters. I only have 2 GB and 4 GB cards. You can spend more on bigger cards but I don't think it's necessary, especially in your case since you say you won't be using bait. Check Amazon and eBay for good prices on sd cards.