Yesterday i got my U-Sea and iam happy now to kick out Forbidden Ochad.. those Spirits were really messy..( cant understand how someone plays 3 :P )
For info iam playing
10 Lands:
4 City of Brass
4 Gemstone Mine
1 Undiscovered Paradise
1 U-sea

looks comfortable for me but iam going to test it on some tournaments the next month and will see how comfortable it really is.