sorry for my bad english!
I would buy a mamba 7.5, but i would know before buying the reals differences between the two models creek and "play".
When you read the spec on the Dagger website, the two weigths are the same (43 lbs=19 kg)
Is it exact?
Sorry this took a bit to get back to, just noticed it under discussion. In answer to your question the Mamba with the creek set-up will be slightly heavier. This is due to the seat and front pillar set-up which is the only difference. I would guess at most it would be 5lbs heavier. Hope this helps