Ex7300 or ex7500 as an orbi extender

[Tymok]

My orbi RBW30 satellite broke down and I'll be replacing it with an extender.

what would be better, to get a ex7300 and connecting it to my orbi with an Ethernet cable or a ex7500 and connecting it with 5GHz fast line.

last weekend I borrowed an ex7500

The ex7500 connects orbi router on Chanels 36, 38, 40, 42.

chanels 100+ are reserved by orbi for its backhaul.

the ex7500 extends 5GHz on chanels 100+ and it works fine, it shows 866 Mbps in the connection status

My cable provides 400Mbps download speed, I get full speed on devices connected to the extender

ping is about 1 maybe 2 ms longer than on the router.

will the ex7300 connected by cable work with the same ssid @AS the router?
will it work on different chanels than the routers WiFi?

Will pings be shorter than through the ex7500?
what's better?

can I connect the ex7500 to the orbi hidden backhaul ssid - any know how ?

ps. I've tried a router with large coverage, but I still get blind spots.

maybe any other solutions?

[plemans · Accepted solution]

You'll get better performance out of the ex7500 versus the ex7300 because of the dedicated backhaul. That's the route I'd do. 

[plemans]

Is there a reason you're not buying an orbi satellite? 

the following are compatible so you can use the backhaul link:

rbs20

rbw30

rbs40

rbs40v (tends to go on sale a lot on amazon)

rbs50

rbs50y (outdoor version)

[Tymok]

Id prefer a wallplug. I’ve got a plug just under the sealing, no shelf’s, no wall-mount’s etc.
Just a plug and a Ethernet cable.
In my country used Orbi satellites aren’t available. I can get a new RBS40v and RBS50.
They cost ca. 290 and 330 USD (vat incl.)

I can get a used ex7500 for 70 USD and a ex7300 for 90 USD.

I was considering an AP. The solution has to be cheap. It’s only for one printer and an outdoor camera.

[plemans · Accepted solution]

You'll get better performance out of the ex7500 versus the ex7300 because of the dedicated backhaul. That's the route I'd do.