Don't know anything about 'Sonic' or any of the 'Newcomers' to the tackle-scene.
They may be excellent products but as yet, haven't been proven by the 'test of time'
In the decades that I've been fishing 'the fly', I've been through the whole gambit of manufacturers and, for the last ten years or so, I've stuck with 'Orvis'. They may be 'Yanks' and some people say 'overpriced' but the rods have the sweetest action I've come accross, AND their 'no quibble' lifetime guarantee cannot be faulted. (I know 'cos I've cashed in on it twice in the recent past).
For my money, pounds-for-pounds, (or dollars-for-dollars) they're better than 'Hardy'
Just a thought!