I've heard Merrels are very comfy on the cruise forum. Everyone goes crazy about them for walking, but I do not like that style at all. =/
I also found these. I may get these too, in case the Pumas don't work out. A bit more than I wanted to spend though. They have non studded ones for less but they don't look as cool. I have Frye boots and I really like their look and quality.
Frye Reagan Studded Kiltie Grey Soft Vintage Leather - Zappos.com Free Shipping BOTH Ways