I suggest that plain white square 12" x 12", on a tub wall is out and done a long time ago. If you don't like subway (standard) white 3" x 6" they do come in colors and also there are a bit larger subway look as well.

http://products.daltile.com/product-search.cfm

I am not sure if you are planning on using the pattern tile on the floor ( that is what comes up for me when I click the link) but if so, maybe check out the tile on this link, from Daltile:

http://products.daltile.com/series.cfm?series=470&type=porcelain

They come in white and shades of gray, you can always do a 12" x 24" vertical on a tub, rather then a 12" x 12", since you are not a fan of subway tiles.

Hopefully that will help you a little.

Thank you both very much! Your thoughts and opinions help tremendously! I'll check out the options for 12x24 above! thank you!