networkn:
I have the Ryobi and I think it's OK. Just OK. I likely wouldn't buy another, but it's streets ahead of the Ozito I had before with it's stupid little plastic tag things.
"the" ryobi covers many things from plastic toy crap designed to compete with the no brand stuff thru to quite competant tools.
First I got this - https://www.bunnings.co.nz/ryobi-one-18v-25-30cm-cordless-line-trimmer-tool-only_p0208315 or one like it. Total junk, and the string has to be in these little pre-wound spools that are a pain to re-wind and the end of it gets all beat up and wedges on, and it drops new string out whenever it stops running so you just keep it running when not needed to prevent string wastage.
Then I got this, because I could put my expandit ends from my plug in one on it https://www.bunnings.co.nz/ryobi-one-18v-33-38cm-hp-brushless-cordless-line-trimmer-tool-only_p0343430 - totally usable trimmer, and if they did a shub bashing end for it here I would have that on it too (but its not sold here for some reason and ryobi is hard to get from the US)