One thing to consider is some of these hubs are strictly cloud based. For example, the Samsung SmartThings hub is all cloud based. If your internet goes down so does all your automation, scenes, control, etc. I moved off of X10 and have all ZWave now. Currently working on getting a new ISY running to get away from samsung. Alexa is really starting to piss me off too so I will also be going to an IR solution. Not to mention the possible privacy issues with Alexa.
I must say that, so far, I have been somewhat disappointed in the UDI ISY ZWave implementation. I know that the ZWave is fractured as to what some makers will support but, IMHO, UDI needs to get on the ball. Perhaps they want to be married strictly to insteon? As to Insteon, my perception of it is simply that it was X10 v2.0. I had a lot of X10 stuff and I found it way too unreliable. I wasn't about to do any more PLC stuff.
Except for the Amazon Alexa shtuff, I have found ZWave to be really reliable with some cool features.
In short, considering the ZWave stuff is being made by many companies and the slews of various ZWave controls (more being added daily), and the ability to get some of it at Home Depot , I would suggest getting away from the proprietary insteon shtuff. With that, all we can hope is that UDI sees which way the wind is blowing and makes a massive push in ZWave development.
YMMV