Marius sizing, anyone ridden both?

I thought i would ask this of the very marius-friendly community we have going here. i recently snagged an 07 marius 134 platinum off ebay for a great deal. i have only taken it for two sets. i like the boards pop and speed but it feels a little small. i usually ride a 138 watson which i love and a 136 shane which i just like. Im 6' and about 165 and thought that the size would be ok because of the width. dont get me wrong i like the board but im just wondering if maybe i would get some better pop and the infamous soft landings more from the 140, or would it feel like a cadillac attached to my feet? who has ridden both sizes and whats your take? anyone else around my size and what are you riding? thanks for the advice!