your probably gonna want something a little larger being hd. Depending on how often you check them I would atleast go with an 8gb sdhc. I would go with a sandisk brand as well. Other brands do fine in the summer but when it gets cold they usually dont perform as well.
I have a couple of the 436 cams and they work well with my sandisk cards 8 and 16 gb cards.I also like the kingston brand. If your cam has the option in the menu to format in the cam use it,save yourself some headaches down the road. that goes for any brand of cams out there, formatting your cars in your home computer does not work well in all cams. walle-world has 8 gb sd cards for 9.88 I would go for a 16 or 32 if you are going to run in video mode and maybe even lithium battery's.
I use 4 gig Kingston. If you want quality disk, go to a computer store or newegg.com. I use the mini's 4gig kingstone. I love them because I can put them in my phone and check them.... I haven't had any issue's
I'd go with Sandisk. Atleast 4gb depending on the frequency you check. I have 3 or 4, 4gb sandisk's that I just swap and then take it home to check or sometimes Ill take my laptop with me a check it in the truck....keeps me from speeding on the way home!!
Classes normally represent different read/write speeds so choosing a card for a trail cam based on class isn't necessary. I've used both regular SD cards and MicroSD cards with the SD adapter without problem. Just make sure the MicroSD is fully seated in the adapter. Buy multiple cards of the same size so you can swap out cards when you visit and take the pictures home. Or if you use the MicroSD cards and have a smart phone - you can probably load the pics on your phone and then put the card back in the cam.
I maxed my out on that camera the other day. 5200 pics in the Bushnell hd. It was a PNY 4 GBP class 4 sd card.
I would love to find a cheap 32gb and do video with it. This is why I was asking the question on the class.
Class doesn't mean that much with Trail Cams. All that means is how fast the card can download a pic or video. My 466 take Ultra cards so it can handle the HD. I use 8gb Ultra class 4 cards and they work just fine.