Advice on Jones mountain twin 2019

Hi guys,

Im looking at getting an all mountain snowboard and from reviews ive read the Jones mountain twin seems to be a good match.
I enjoy a mix of groomed runs, off piste and ive started to hit smaller jumps in the park and practice switch.

Im at the lower stage of intermediate and want a board that will be good for the Australian conditions but also able to handle more powder occasionally in Japan, canada etc and something i can grow and advance my skills with.

Any other suggestions besides the Jones mountain twin?

Also could do with some tips on sizing.
Im 185cm tall, usually weigh between 88-93kg, boot size is 11.5 in burton ruler wides (ive heard their sizing can be a bit different).
Im currently riding a second hand 160cm rossignol. Not sure of the model its fairly old.

Thanks in advance for any advice, Matt.