Probably not the very best but certainly one of the cheapest and does the job.

I've got some Ryobi tools so have several batteries. HD had the string trimmer and blower combo for like $69. May still be on sale for cheap.

Their tools are well designed and work fine for the price.

I have a couple of gas trimmer and don't even bother to use them anymore. The Ryobi is much easier to use and does the job.