I don't which is better. Everdrive or PowerPak. This forum post will probably help some people who gonna buy PowerPak or Everdrive on their console. I still don't know which is better.

Everdrive has newer mappers so maybe it's better?

Everdrive is what I have and I have heard it’s better and it’s also cheaper. It works fine and is functional

I think they do virtually the exact same thing

They look a little different (pictures below) - Powerpak is slightly more expensive. Everdrive takes normal SD card, Powerpak takes CompactFlash Card ("CF"). You can buy both of those flash cards from Wal-Mart or Amazon. I use Powerpak, and it works great, no complaints. I don't think it really matters which one you buy, both can savestate. You'll also need to buy a flash card reader. If you go with Powerpak, make sure you get a flash card reader that specifically includes CF cards, since it's a slightly more obscure type of flash card.

Everdrive - $118 - https://krikzz.com/store/home/31-everdrive-n8-nes.html

Powerpak - $135 - https://www.retrousb.com/product_info.php?cPath=24&products_id=34&osCsid=81cedae6f84d4f617548df2d1044d84b

I've heard from people like @Kosmic that the Everdrive is better or, "More Supported". I've never owned either but that's just what I've heard.