Can't help much with specifics because I don't know those specific boards, but I can help a little.
I have heard that Capita may not be as durable as some boards cause they are more affordable and are very popular with park riders that thrash their boards every year and then get a new one. However, they are very popular boards, so I can't imagine they have a serious durability issue.
Mervin boards are great, I've owned two, and the only durability issues I've heard are cosmetic related to the top sheet (not important IMO).
Like the previous poster, more details about what you are looking for helps. You said you like everything, but the boards you listed are pretty park oriented (I think....again, I don't know much about them).