I have read through most of the exotic durability threads, which seem to focus mainly on bags, but I was wondering if anyone with specific experience with lizard or ostrich agendas could chime in on the pros and cons between the two. I am looking at either a chocolate brown ostrich globetrotter or a black lizard globetrotter. Does one open easier than the other (in terms of the spine opening flat?) Color changes over time? Damage to leather over time? The need for careful storage within a handbag? Does color make a different in terms of appearance over time? Thanks.