Didn't vote, I haven't used either specifically. I sleep in a hammock at home 7 nights a week, for over a decade now, and wouldn't use anything else. When on the road I generally just take the rainfly from the tent and toss it over top of me and use it as the sleeping bag/tent combo. I generally sleep on concrete or blacktop, to keep myself away from moisture laiden grass(if my equipment doesn't get wet I don't have to dry it out, and mosquitoes seem to tend to stick to wet areas not areas that are high and dry) and it also allows me to sleep under overhangs on churches/schools/baseball dugouts/store fronts, etc so when it does rain everything stays dry...as a result I kinda consider it a bivy setup. No, it isn't anywhere near as comfortable as a hammock. The hammock, at home, I never toss and turn all night long. I sleep on my back full time every night. I actually don't have any furniture at my house, I just use the hammock as my chair/couch/bed...one size fits all. On the road I want the 'luxury' of a flexible campsite location so if the forecast is calling for rain I can get under cover and keep everything dry. If I have to have something to act as hang point for the hammock than that limits where i can put the hammock for the night...the bivy doesn't have that limitation. If there was a lightweight way of hanging the hammock that could easily be taken on the bike I would stick with the hammock for the bike trips, nothing beats the comfort.