TDeck has more features like keyboard, more IO options built in and bit larger RAM (I believe)

Tbeam is same without keyboard (great device)

RAK also has some great dwvices

Simplest is to just get started with a simple Heltec V3 or LilyGo T-Beam (SX1262/SX1276) as the T-Beam comes with a place for standard 18650 battery


Checkout more hardware options with details here👇
https://meshtastic.org/docs/hardware/devices 

 Thanks, appreciate the help 

 I have a planned meshtastic guide & demo.
I'll bump that up on my list to complete & share 🚀 

 That would be great, we need to establish a bigger network of nodes in case of emergencies, war, etc (and also just for fun).