I went through a 'love-it' phase with RY4's and now I can barely stand the smell of someone else vaping them.
Some are better than others, but my best advice would be to let it sit for a little while. Many prepared e-liquids do tend to soften over time and that chemical taste will fade away. So put it in a dark cool place and leave it alone for a couple of weeks, then come back to it and see. Also, you might want to try it in a different topper. Some juices will taste better in a clearo or carto and others are made to drip.
I've not tried the Mr. E-liquid RY4 (and I have tried a lot of different brands and varieties) but I will also say that I am sure someone will say it's the best juice ever, and some others will say it's the worst. As always, taste is completely subjective.