well - let me ask a question.
I only have experience with the 2 flea power HF sharpener. I have never seen an experienced chain sharpener do their thing. I also recognized the HF tool is probably a POS and not so hot.
That being said- the HF took (to me) seemed underpowered. The plastic body also seemed flexy and cheap...
However, I liked the flexible aspect in the sense I could just grab the motor/saw assembly and kant it like I preferred against the chain.
so.... How is the better sharpener better? Faster? easier alignment? As a HF customer, I am sure there is only one way to go from the bottom- up. But how is a good tool better?
(ps..I'm still going to send off my chains for $7 sharpenings

my chain sharpener guy hate me- I drop off about 10-15 chains at a time).