I have been swimming competitively for 5 years, and have been using the original hydrospex goggles for that entire period. Those goggles served me perfectly, and I never had any complaint about the fit, comfort, or functionality.
The Hydrospex 2 goggles are a big step down. they leak water after every fourth or fifth flipturn. I feel that the adjustment system is unnecessarily complicated. Also, the rubber that the strap is made of has become very 'grippy' - it sticks to the hair or cap, and is not smooth-feeling, like the older model.
In all, stick with the tried and trusted original.