A Yagi antenna is directional while the ones that the OP referenced are omni-directional. With A Yagi you need to point it at the tower but it produce a MUCH stronger signal even without an amplifier.
I know that and probably did not read the op's post correctly.:B
Working and spending a bunch of time deep in the hills of Idaho I have experimented with several combinations of boosters and antenna's so I could get out in case of an emergency.On 911 I was in the hills and never heard about what happened until I walked to the top of the nearest hill for reception days later.
I run a +6db magnetic mount on my pickup camper and my old Class C..The Yagi makes a big difference if I cannot bring in a signal even with my Wilson booster..Knowing where the tower is, it isn't much of an issue.
The Wilson booster is very impressive as it makes a huge difference from 0-1 bars to 4-5 just with the magnetic antenna and if I only have 0-1 bars with the booster,hooking up the Yagi is worth the time bringing 0-1 bars with the booster, to 3-4 most of the time making phone calls possible rather than just text messages at the really low reception.
A good booster is spendy but for those that rely on cell service of some sort way back in the hills,there worth it.