Scubapro MK25 Evo / A700
There is no equal to the MK25 Evo in terms of ease of breathing and air flow. No matter what your tank pressure or your depth, you will be able to breathe effortlessly! It has 5 low pressure ports and 2 high pressure ports and a swivel turret at the bottom of the regulator so you can arrange your hoses anyway you like. The bottom port is ideal for technical setups.
The chrome version of the A700 has a full metal case on it with a screw-on face plate and a full metal barrel on the inside, making the breathing air slightly moist (due to the condensation), ideal to prevent a dry mouth during your dive! All this metal may sound like it's heavy, but it's actually only 265 grams and obviously the durability of the reg is exceptional because of the use of all the metal parts.
The bottomline: The Scubapro MK25 Evo combined with the A700 is Scubapro's best regulator with exceptional durability.