I have one bike in mind that I plan on getting, I recently found out that the Sport version of the bike has hydraulic disk brakes as opposed to mechanical. There is an $85 difference between the two. Which on should I go for? In other words, what are the benefits of hydraulic over mechanical? Or the other way around?


Diamondback Overdrive Bike 2015 > Complete Bikes > Mountain Bikes | Jenson USA Mechanical


Diamondback Overdrive Sport Bike 2015 > Complete Bikes > Mountain Bikes | Jenson USA Hydraulic

I could also go for two other bikes I have in mind, one is mechanical and the other is hydraulic. Any advice is appreciated.

Alternates:
GT Bikes Karakoram Comp Bike 2014 > Complete Bikes > Mountain Bikes | Jenson USA (Hydraulic)

Giant Revel 29er Bike 2015 > G > Giant Bicycles | Jenson USA (Mechanical)

By the way, my budget is under $600, I really don't have any more to spend and I think I can get a decent bike for that much. Thank you for any help...