[spaghetti]

small world Sands: by chance i use the same best divers' buoy. It's made in my mother's home town Brescia, north of italy. Not very interesting, i know, but when i saw the pic my heart started beating fast.
My advice: inflatable floats better than solid ones. For instance, a buddy of mine uses the solid non-inflatable Seatec nautilus, beautiful and very well-working in water. But outside water it's very unhandy to carry around: you nearly need a kart for it (or a caddy, or patience and strong arms).