I have had my mesh Ion for 4 years now. I was looking for a Textile and so I got the 5.0. I have to say that for the mighty dollar, this jacket is wonderful. I went out at 36F doing 75MPH, having a thin thermal and a button shirt on with no JR Liner and I was very comfortable. Guys complain about the zippers and fabric......I never had one issue with the Ion. I do recommend to order a spine protector from Alpine or anyone else who makes them well. The foam one is crap. I am 6'4", 205 lbs, 44 chest, 42 waist. XL is snug with the liner and perfect without. I am between XL and 2X. I took the XL cause I don't want to have it too loose on me in the event I have only a lite shirt on. If you do not want to kill your bank account, this is the one.