How do they compare?
The Poynting has more mounting options and is cheaper, the MobileMark is a bit smaller at around 6.5 inches round and lower profile. Poynting has an integrated grounding plane for RV roof use and MobileMark requires an optional grounding plane available at checkout. Both are great antennas but typically the Poynting is more popular because it is cheaper and has more mounting flexibility.
Both antennas very similar performance, so close that we consider that a break-even when comparing the too.