What's the best way to add a second line or app to a cell phone so you can use one phone for business and personal calls?

I initially tried using Google voice with forwarding, but I don't think there's a way to make it stop saying it's a Google voice number when someone calls, plus it has limited features and makes a person go through a process when they call. I want a second and maybe a third dedicated business number, so I can use my personal cell for talk/ text, without it being obvious to the person I'm talking to that I'm using a VOIP, service, or my personal cell. 

Is anyone out there doing this already? What apps or companies do you use? (Yes, there are lots and I could read the reviews, but I'd rather hear what's working for real people with nothing to gain from recommending a company.)