Sounds like it might be pretty good. I like RY4, even most of the nontraditional versions.
I just tried OBA OBA for the first time yesterday. I'm first initial impression was definitely a sweet vanilla with hints of orange, banana, and apple. And don't each of those three hints of flavor start with an O, B, and A? lol. OBA OBA is similar to Volcano eCig's Vanilla Bean. I was thinking of mixing some OBA OBA with a little caramel and maybe a bit of Virginia tobacco flavor.