If you are a die-hard Polaro rider, comfortable with all that the IQ deep snow sleds have to offer, then any of the 'mobiles you have listed will be OK. They all have their ups and downs, pros and cons. Unfortunately, it is your money to throw around and a pick you must make - that is what we all did and how we all came up with our recommendations to offer. So, go sit on all of them, and get the one that feels the best and has the color scheme you like. Sometimes it is as simple as that. You cannot go wrong with any of the choices.