what do you recommend are suggest we should get
I use an
Edimax BR6478AC.
It has 2 outbound radios: 5.0 GHz using the 802.11AC protocol, and a 2.4 GHz using 802.11b/g/n protocols. It also has 2 inbound radios, also 5.0 GHz and 2.4 GHz.
When we arrive at a campground, I'll use the survey function on 5.0 GHz first. More and more campgrounds are moving to add 5.0 GHz access points. If they have it, and the signal is good, I use 5.0. The channels are way wider and have far less interference. But the signal has to be good. 5.0 signals don't propagate as well as 2.4.
If they don't have a strong 5.0 signal at our site, I'll survey on 2.4 GHz and use that as the fallback connection to the campground WiFi.
On the inbound side, I'll have both frequencies active. Newer phones, tablets and computers will connect to the router on 5.0 GHz. Older equipment and stuff like printers with WiFi will typically only have 2.4 GHz.
If you have all your devices set up to connect to the router, you only have to find and connect to the best campground signal with the outbound radios.
The Edimax has high performance antennas, and fast radios on both sides, along with fast data transfer between radios.
At about $60, the Edimax only does WiFi connections - no cellular. So we use a Verizon MiFi where there's no campground WiFi. The Edimax gets pointed to the Verizon MiFi in those situations.
So why would you ever want the Winegard? I believe it has an external antenna, which in theory will help by getting a signal that isn't impeded by the walls of the RV. But I've tried external antennas, along with antennas in the window. I'll stick with the Edimax at $60, and fall back to the Verizon MiFi when necessary.
In my experience, signal interference in campgrounds is a much bigger problem than signal strength. And the interference is primarily on 2.4 GHz.