Hey Trix, the only thing I would say is that the current PJ models are using the carbon fibre spring, which in my opinion is stiffer then the fibreglass spring.
Basicaly with the fibreglass spring we used to advise people to get the next weight range up, so if you were 70kg we'd always say you want at least the M80's.
With the carbon fibre, I'm not so sure the same applies, or if it does, it doesnt apply as much.
A carbon fibre M80 spring is stiffer than a fibreglass M80 spring is what it comes down to.
I'd ignore any "coming soon" models. Until they are on sale, they dont really exist!