Do you mean for you to do mobile or for clients to do themselves? If it's the former, what is the issue you would have with your current brand, and if it's the latter, gel nails shouldn't really be done by anyone other than a professional.
I'd personally advocate for Cuccio because it's what I used professionally and in my training - I won't pretend that I wasn't partially swayed by the aesthetic appeal of their bottles and perfectly sized brushes that are perfect for my small nails. Although The Gel Bottle looks like an amazing product. F I ever went back to Pro again, I would love to try it.