Frank Thomas dri viz here. Not tried any others to compare it with but am very happy with it. Removable lining, vents on chest, upper arms and lower back. Personally I like the hi viz element, tho it is starting to get dirty and fade. I would try to clean it but, hell, it's a motorbike jacket, it's meant to be dirty! The trousers that went with it at the time I bought look silly tho, with a wide hi viz stripe down the outter leg
On the down side the zip tends to get caught on the fabric sometimes, a little care takes care of that