Funny you mention this
I've been on kind of the same quest, and frustration led to this:
18% Cap Strawberry
3% FA fresh cream
2% FA Vanilla Classic (aka madagascar)
2% sweetner (bought premade..from bullcity I think. Pretty sure it's sucralose)
Now, normally I would never go that much flavoring but like I said, I was kinda frustrated with trying to get a super sweet, in your face strawberry. This actually came out pretty darned good! I have also swapped in Cap Pomegranate with good results. It sounds a little over the top, but you might give it a try.