Sorry, I'm not sure what the difference between the rsrc2 LOW and MID are, I guess i shoudl try and find out. If anyone can posti t here I'll also add it to the guide.
The firmware depends on what country you are in I guess and whether the features good or not. I'm using F480XEHF3 (you can find it easily in the 3G requet firmware thread). This one is suitable for most European countries as it has English, French, German, Spanish, Italian, Polish, Russian, and MANY others. The camera works much better than my Vodafone branded firmware and it looks a whole lot nicer. I prefer the layout of a lot of the features too (main menu is different).
I'm wondering if there are any new firmwares out for July yet? Are they any good? If anyone has them coult you post a link and I'll update the thread with credit to you too.