which phone should i go for the new v8 with 512 mb memory or the z6. im not too concerned about the v8 memory being 512mb rather than 2gig because it would be my secondary phone.and what about the z8? the reason i prefer the v8 and z6 is because they have the linux ui which is supposed to be real smart.what about the z8 ui whats that like? the z8 is also 50% dearer than the v8 but is it worth the difference?