Depends on the pricepoint and what you are looking for to me. Quality sound is with the Bose, but that comes at a price. The Fishmans are nice because they have an additional AUX feature that u can plug in a second guitar (or mic with adapter) on the back of the amps. And they are relatively light for the Watts they provide and have individual controls for your guitar input and your mic input, including Reverb and Chorus, besides Hi, Mid and Low controls. For the Bose, that is gonna cost you for their Bose Mixer/Tone Match.
But the Bose is great because you can add a sub-woofer and you can have a powerful system that can grow. The Fishman Charge is great because it has a built in rechargable battery that will last up until 8 hours (i think).
They are both good products with a niche.
Larry D