I used one these to cut a very large area over Labor Day, worked great. The string is .155 and just keeps going and going!

Ariens 22" walk behind string trimmer

Also used one on the larger Stihl commercial string trimmers straight shaft with a double shoulder harness with the bike bars. Worked great also, used it to get into the tight areas that the Ariens could not get to. I know this is overkill for most of our yards. I have a stihl chainsaw I bought in the 70's, never any problems. Would buy Stihl products always.

I have a John Deere string trimmer I use at home, what a piece of shat that is. Plus dealing with the J.D. dealers is a horrible experience!
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She sits on the dock a fishin' in the water uh, huh
I don't know her name she's the fisherman's daughter uh, huh
Come on down to my boat baby
Come on down where we can play
Come on down to my boat baby
Come on down we'll sail away.