It's easy enough to use but not too simple - it has all you need without being so basic as some other platforms like Hubspot or even Google Analytics can feel at times (I'm looking forward to their upcoming "free" version). I have been using GSoC since last year now with my own clients/customer base which makes things easier when doing SEO work etc. The only thing i dislike sometimes from getting new customers onboarding them via our website is how long we spend trying different plugins before settling down into what works well for us. But once they've started working properly then everything runs smoothly afterwards because there aren't many issues anymore.