I know very little about Halmaheras. I know they can be purchased for a fraction of the price earning them the name "poor mans Leachie". I don't think alot of people work with them so I'm not sure how easy it would be to get a CB. If your looking for a large gecko gecko that alot of people are working with I would go Leachie or even possibly a Tokay(with all the new morphs coming out they are only going to gain popularity) If your looking for a cool New caledonian I would suggest looking into a Chahoua or agricolae