You can make good fruit DIY but most of the recipes out there are all far too weak to come close to commercial juices. There seems to be a trail of thought in the DIY community that you have to stay quite low and have percentages like 1.75% mixed in with 2% or the like. I've been slowly increasing the percentages of some of mine and there are pitfalls, like where a concentrate that's good low has off flavours when you punt it higher.
For me it's about finding those concentrates that go well at a higher percentage, usually the super concentrated ones at 3 or 4 % instead of 1% or 0.5%. Sometimes it's just using a Capella or TFA concentrate at 6 or 7% instead of 3%.
I make to my own tastes and what I like might be stinking to you but I am slowly getting there as I use my missus as a barometer. She hates DIY juice, it's all too weak for her. I made one last week that she thought I'd bought. I was so happy.