I recommend that you read some of the device reviews found in the review section:
Review - EroScripts
There are reviews of FunSR Pro and The Handy 2 Pro. These two has pros/cons and TLDR sections. Use the table of contents on the right. FunSR is not as user friendly for beginners.
🔬 Handy 2 Pro: The Ultimate In-Depth Review - UPDATED 29.11
🔬 FUNSR PRO - The Ultimate In-Depth Review
If you look further down in the review section you find reviews of FunSR 1 & 2 as well.