I am new one, which product is the best to buy?
Why not all of them? Then you can try different ones and see which you like best. That’s the best answer I can give without knowing what you want to do with the product.
@Amber Could you be a bit more specific? Homeowner, backup system for prolonged blackouts, for camping, mobile or stationary, for hiking, etc.
All-in-one solution with additional batteries and PV?
Not sure if helpful at all, However. I purchased a bundle: Ac3000+B300k+ Portable PV panel for use at my off grid shop. While I mostly use battery tools, Makita/ Milwaukee, i am now powering my 120v drill press, magnetic drill motor, Lincon 120v 20A welder, and fans to move air. Other misc. 120 volt tools.
Super happy so far with ease of use and rege neration by the PV panel. Live in SO Cal so lots of sunshine.
Looking to upgrade by adding two mire batteries and fixed rooftop mounted 320w pv panels.
Lots of support by forum.
Best of luck!