Thanks to Juice for teaching me how to make custom water blocks. With Juice's knowledge I made some scripts to check all the new water blocks and this set contain the most interesting ones.
I'd recommend 1-5-4-1 as, with a bit of work it creates completely invisible water, which is pretty cool, (an example of this is this map on tmx: "207682").
Hope to see some of the abominations of maps that can be made with these blocks xdd