Mhh, will have to look out for that one. I love tripples.
My favorite is Karmelier, closely followed by Hapkin. Okay both are on the stronger side, but for sure they aren't as bitter as Duvel for instance.
But last month I did discover a new gem! It is called "Vliegend Varken". Also a blond tripple with a whopping 9%. But when you drink it, it doesn't feel like a heavy beer. If you do find it, try it.

!BEER

Cheers,
Peter