Tags are extremely confusing. Here is a quick list of ones you might come across.
[!] - "Verified" as a good dump.
(J) - Japan.
(U) - USA.
(E) - Europe.
(EU) - Europe and USA.
(JU) - Japan and USA.
(JUE) - All regions.
(W) - World (same as JUE)
(Brazil) - duh.
[R-country] - Specific country dump.
Don't download anything from this site unless you already own it.