https://speedcubedb.com/a/3x3/COLL This is probably the best place for up to date algorithms.
For Sunes and Antisunes, I think it depends. For example, I find it hard not to go for a Niklas when I see one because it is so short for an EPLL. I think the sunes and antisunes are worth it, but only a little. However, it is only 12 algs.
Just something to keep in mind: when people argue against COLL, they compare a Z perm to a J perm, and while a J perm is better than a Z perm, you get a U perm 2/3 times with COLL, and a Z perm 1/6 times, and Z perm is still quite fast compared to adj PLL.
You recognize the case by looking at which stickers are the same, which are adjacent, and which are opposite.
One more thing: COLL is worth it, but I think ZBLL is better. Obviously it is faster, although it takes a lot more work; However, you don't need to learn all of ZBLL. Just learn what you can. People tend to shy away from ZBLL, but you will need it when you get faster, might as well get started now.
Hope this helps!
