I still use my Hennessy Explorer Ultralight. And the hex tarp upgrade that I got for no additional charge as a promotion from Hennessy.
I like it; it's comfy, it's roomy, it's not as heavy as my old tent was. On the other hand, my first mod to it was to swap out the suspension; I got tired of tying and retying the figure-8 wrap every time I wanted to adjust the lie of the hammock. Which is, arguably, a feature rather than a bug--Hennessy wanted the simplest connection between the suspension and straps, a laudable goal. Just not one for me.
I'm going to be moving over to a DIY hammock here in a month or two, judging by my bank account and current expenses. Which is not because the Hennessy is a bad hammock; I'm still going to keep it around for the odd trip where I want to use it or to loan it out to a friend. It's because I want features that aren't included in the Hennessy, and that I think I can get my hammock design lighter than the Hennessy by making design compromises that a commercial manufacturer wouldn't be able to for a mass-produced hammock. Plus, it gives me an excuse to tinker. Which, I suppose, in the end, is really the reason to play with DIY.