I got an obsession def con 6 last summer .That thing is deadly. I shot the halon and the defcon 6 side by side for about 30 min and for my money I choose the obsession. Don't get me wrong the halon is a great bow but the obsession was substantially lighter and was as fast or faster than the halon. The most impressive thing to me about the defcon 6 is it totally dead in your hand and is super quiet.
I too bought a Def Con last year, but mine was the Def Con 7. I shot it against literally almost EVERYTHING (missing bear, prime and g5) and it by far felt the best for me. Zero hand shock, fast as lightning, smooth draw, and most importantly for me personally, a super long valley. I bought a 2016 when the 2017 line was coming out because i was forced to if i wanted to bow hunt this last fall (limb failure on my old bow 1 week into season). They released the 2017 modles and the 2017 models are no longer a modular cam system requiring you to pay $85 for a new module to change draw lengths. Obsession now has their cams set up where you can adjust length like most other bow companies. They will be a decent bit cheaper than the Mathews, and quite a bit faster. I love my Def Con 7, however, when we set mine up, in order to get the bow to shoot a good bullet hole we had to switch the shims from both sides creating considerable cam lean. (Like looks bad enough that it appears the string is about to derail coming over the cams.) Apparently this has been a problem for obsession in the past as i have heard many stories of having to move rests almost completely off the riser to get to the center shot of the bow or purchase completely new shims on a brand new bow in order to get it tuned correctly. I've taken this setup to two different shops that were supposed to be well known Obsession dealers in North AL and Tullahoma, TN as my personal favorite shop quit carrying them due to the same types of tuning issues a couple years ago and neither has been able to come up with a solution so far. I would pay attention to that as much as possible if you're considering an obsession as the dealer wants to sell you that bow. The shop in Tullahoma that i purchased the bow from did not even suggest i paper tune the bow before i walked out. Almost like they knew it wouldn't tune. However, even with all this I think i would buy one again if i had to do it again and just be more careful before i hand my money over......I think. Just my story on my bow buying experience....