Side venting masks?

Hi
I was wondering if there is anyway to find out which masks are side venting? I used to use a Mirage FX which was side venting but then decided to try something different - the Wisp Nasal. But I found out when using it that it vents to the front and since I sleep on my side, the air coming out the front wakes up my wife. So I had to switch back to the Mirage FX. Now I want to buy a new mask and planning to play it safe and get another Mirage FX - but i'm tempted to try a new one to see if it's better. But I would need a way to figure out which masks vent to the side and there doesn't seem to be any info on that online. Ideas?