I don't think the HUGS make a difference as far as twisted strap prevention goes, not at least in my experience. :twocents: When our Regent straps twist, it's usually the lower portion of the harness that gets folded over at the buckle tongues, and the same for the Como which doesn't have HUGS (just longer harness strap covers compared to the Regent). Our Signo doesn't seem as twist prone, but it may be due to having a different buckle than the Como. The Signo has a Dorel-like buckle. I don't think we ever had a twist in our Marathon or Blvd's harnesses.
The Frontier does seem twistier than all of the above, unfortunately. It would probably help if the Frontier had velcro like the MA/Blvd. or elastic strips like the Regent has on the cover to tuck the harness to the sides when the kiddo isn't buckled up in the seat to help prevent twisting.