not the OP but I use the IODD ST400 for this purpose and wish I had gotten something like this long ago
Can confirm, also have 2 IODD devices for this purpose, though I usually grab my (simplest) USB stick that has netboot.xyz flashed to it, and just boot off that, and select whatever netboot image I want and have it get everything from the interwebs. No need to ever update this workflow.
Will netboot.xyz boot from a WiFi connection? I've always assumed no, and most of my machines do not have Ethernet jacks anymore.
Way too many unnecessary features and too expensive. The 2531 is perfect.
I've had this since about 2014.
I think both of them have been at the same price for at least 2 years now.
All things being equal, simple and proven is better than over-complicated and extraneous.