I am not convinced the $5 difference is worth it in 22X unless you are in the first few rows. My biggest grip is people and groups get up and down a lot compared with other places I sit. It can also get suprisingly warm which may not work for everyone atlhough it tends to get a good breeze on ocassion.
This man speaks the truth!
But yes- remember that the sun will set over the left/3rd base side of the field. So if you are sitting on the 3rd base side you will get shade, 1st base side and back of the field (below the scoreboard, etc) get some awful sun, especially during day games. This doesn't matter so much during evening games when the sun has gone behind the seats but day games on the right side of the filed are killer in my opinion.
However 22X might be shaded by the overhang/roof thing but I don't know, I don't buy seats over there very often.