Ok guys. So, as expected after enjoying learning about and then building a quad, its ended up in a box in a cupboard gathering dust

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I've realised that I just don't have the skills or patience to spend large amount of time tuning the craft, plus because I don't have any other benchmarks to compare to, I don't have any idea if my craft is handling well or awful. I've no idea what a really good quad flys like, I've only ever flown one, mine.
But I want to try again. So, whats the simplest, easiest, out of the box and it "just works" control board setup? I've got a KK2 and while I like the screen and the ease of tuning, I litterally have no idea what I'm doing, and have spent hours and hours and batteries and batteries flying around my garden getting more and more frustrated by it just always feeling "meh". I'm prepared to invest a bit of money in getting it flying, but ultimately I expect any home built craft is always going to require more time/tinkering than I have the patience for.
Basically, is there a super easy control board/firmware out there that makes any self build fly great, or should I leave my quad in a box? Quads like the Vortex 250 Pro make me think that If I want to fly well, I really should just buy a pre built, pre tuned quad. But I can't splurge more money.