Received my shorts in the mail a few days ago and I have to say that they are amazing! They are my favorite pair of shorts haha. The waist tightening system feels really really secure, they definitely won't come off/ probably won't even move during training. however as others have said, it is sort of hard to get the shorts on initially because they crotch area does not unvelcro very far down. However once you get them over the hips they fit fine. The shorts themselves are very light, if feels like I'm just wearing my compression shorts with nothing else on lol. The shorts are also very flexible and the split seems are, well, just split seams, hard to mess those up haha. The length of the shorts are perfect IMO. I have a pair of Sprawl V-flexes in the same size and they are too baggy/long for my liking. I have not tried out the new Sprawl Fusions however I have a hard time seeing that they could be better than the Jacos(they are amazing). So, if you are thinking about buying a new pair of shorts, I would highly recommend getting a pair of the new Jaco Resurgence shorts.
Also, I ordered my shorts from here:
Carnal DaMMAge - Your MMA headquarters!
They are fast fast fast! I ordered them at about 3 or 4 in the afternoon and less than an hour later they notified me that they had shipped my item, and I received the shorts 2 days later. Pretty awesome in my opinion, I will definitely buy from them again.