Everyone has slightly different requirements and preferences. As it should be.
My Ipad Navionics stopped in the middle of a passage. App worked but no chart access - was a while ago, and a quick internet search shows that expiry now should just block updates, so maybe that issue is now fixed.
I didn't say that no wifi radars work, I said the Navico Broadband radars dont work well over wifi - they use the entire bandwidth of most wifi systems. Some radars are designed for wifi and should be fine.
For anyone who's interested;
I actually use a PC, AND a conventional plotter. But I have an extensive IT background, and now marine electronics are my business. I get very good discounts on marine electonics for my boat as demo equipment.
I would not like a tablet as a primary as it is to vulnerable - fixed to a mount and connected to power maybe.
I like tech. I have Radar, AIS, Wind data, 4 instrument displays, Fwd Scan Sonar, a 15" display at the helm, a 7" Plotter at the front of the cockpit, a 14" display at the nav station below. Also VHF with DSC. I have two tablets, an Ipad air and an android one. There is wifi access to system data or remote control for plotter, bluetooth AP controller, AP with all modes (Compass, Nav, Wind, WindNav, NoDrift). Also a sonar hub, and a solid state system compass with roll, pitch and yaw. Then Pactor 3 modem, and SSB for weather files and comms (email etc) . The AP Can be controlled by AP remote at helm, the Bluetooth AP controller, the plotter at the front of the cockpit, or from any PC screen. Data is mostly NME2000 by bus, but also ethernet. Software includes Opencpn on PC and Andriod, + Navionics and others on the Ipad. The plotter runs Navico (B&G) NOS.
This system would not be suitable for many, but it suits me. Some like a sextant! (Got one of those too!)