I have flats on my dobro electro acoustic bass & it sounds great. It sounded terrible with roundwounds too.
I had an Aria which was really big bodied a few years back. They are good for home use /recording but in a band situation you can get a little lost in the mix, so just bear that in mind.
Don't buy online if it's acoustic, check it out personally & get one with a bigger body to get more volume