I think as everyone has said make sure you get thermal lenses to prevent fogging... Regarding which type of mask you go for it's all down to personal choice and fit... A system which offers a wide range of lenses which are easy to change is also important... Whoever you buy from make sure you can return or exchange them because if they don't fit or are uncomfortable then you won't be happy or on top of your game.. For me it's i4's but that's my choice... Good vision but low profile so there are some exposed areas... Good luck in finding something that works for you