Kosher Beard Trimmer

I’m finally deciding to grow my beard out (which with my unfortunate genetics is a trial in itself) but I’m still wanting to keep it tidy, so I’m wondering if anyone has any recommendations for halachically approved beard trimmers. I’ve been looking at the Phillip’s Norellco 7200 as its within my price range and seems to have good reviews, but I’ve heard that Phillip’s rotary blades can be a halacha issue