I have a Dye i4 mask (as you can see in my profile pic) which is probably the best mask and eye pro i have ever used.
I have been through quite a few goggles trying to find the one which works for me and didn't fog up, the best so far has been the Dye.
I would recommend the i4 over the i5 as due to the large crank wheel on the back strap of the i5 it may make wearing a helmet difficult where as the i4 its a simple strap.
Before i owned the i4 i used to used a pair of Z-Tac Comtac IIs, frankly it was a faff to don the goggles, mesh mask, helmet with headset then have to adjust everything, everytime.
I then got the Dye i4 and it was quickly noticed that the Comtacs were very uncomfortable with the i4.
I then down graded to the Z-Tac BOWMAN III headset and it was better but that has its own issues.
Best solution was to jury rig the whole thing.
I broke the Z-Tac BOWMAN IIIs into its base component parts (mic, ear speaker, wires) and basically hot glued it directly into the Dye i4 Mask.
Now its just a matter of mask on, connect headset to PTT, helmet on and go!
I have attached some pictures showing how i rigged the headset into the mask, normally the ear speaker is tucked under the strap.
Also as a tip, if you want to wear the Dye i4 with a helmet you either have to do a lot of modding to the helmet or just ensure that the front lip of the helmet has a material thickness of 2.55mm or less, anything thicker than that ( i think the normal is 6mm) is too much and you'll have to take padding out of the helmet.
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