Replying to Please help me to help myself

Hey peeps, this is my first post here!  So please be nice and thanks for taking the time to read

Would just like some quick advice.  I'm from the UK and l am probably about to buy some salomon rocker 92s.  The shop with the best price is offering the Salomon STH 12 (not driver) for an extra £70 ($110).  no others are offered in a deal.
My question is should I just go for these as the price is pretty good?  or just wait and get some bindings from somewhere else? 
all i want is something that holds up when landing (Don't we all) and is fairly light.  I'm kind of on a budget.  The marker bindings i have on my old public enemys kept kicking me out when landing switch

I ski on/off piste, fairly agressively and dabble in the park/some rails.  I'm 6ft 12 stone (170lb)

I'd heard the driver versions were ok but don't know about the standard STH's

Thanks again

IF I could be extra cheeky, 179 or longer?