Hi! What do you folks think of mixing and matching within the same brand?

Specifically, the Rohl Triflow for my prep sink (17x17") with a soap dispenser. I want to be able to get drinking water from the island

http://www.rohlhome.com/Water-Filtration/Product_Detail.aspx?ProductID=U.1293LS1875&Collection=1636&SubCollection=1875&ConnectionString=%22Search.1293%22

With this Rohl Modern Luxe (there's also another pulldown without the flare) I like the idea of a pulldown vs. a sprayer

http://www.rohlhome.com/Kitchen/Product_Detail.aspx?ProductID=R7505-21659&Collection=1620&SubCollection=1659&ConnectionString=%22Search.modern%20lux%22

Both would have same soap dispenser?

http://www.rohlhome.com/Kitchen/Product_Detail.aspx?ProductID=LS750L1642&Collection=1616&SubCollection=1642&ConnectionString=%22Search.soap%20dispenser%22

I am having a hard time finding exactly what I want in the same exact style? If I went with same style, I would have to get a separate water filter and might have to put it on the main sink and use a pull down on the prep and farm sink (but I'm not sure I've worked out all the pieces to this combo)

Thanks!