Yeah, I've paid for Soundtrap for a few years now. Frankly, it's probably a better deal to use Logic Pro or FL Studio than to subscribe to Soundtrap, since the only real advantages it has are cloud storage, no memory requirements, and a non-audio-technician-oriented workflow, and I'll probably switch over to FL Studio at some point in the future bcuz of that, but I've been very happy with Soundtrap so far.
And thanks for the complements on the project page! My day job is a graphic designer, so I'm perhaps more aware of the effect presentation can have on the success of a project than others. It's not too much effort, mind you, but every little bit helps!