u mean the merger with upn well i have gohard and fna and so far the merge has not seemed to of gone without a lot of glitches but we will wait and see .
I have played at everleaf for about a year and play at mintedpoker although i have played at P4E also.
My advice would be stick to the main rooms as they have better promos.
You can get differing amounts of rakeback from each room you can either search the net for an affiliate or go to everleafrakeback.com who list about 4 or 5 skins with RB and bonuses etc.