After reading some of the previous posts...........
Did a comparison when out riding on Wednesday. Tall shield on my shorty, stock mid on buddys Switch. Pics show how much extra flaring they have to keep your mid section and legs out of the wind. While flares for your hands are similar at a glance, look closer you'll see ones on the tall shield are angled totally different n deflect air up n away from your hands. Took my glove off while riding so I could feel exactly where air hit or does not hit, no comparison between what the tall version keeps off you vs the mid.
As for the buffeting noise (tall version), 50, 60, 70 or 80+ mph down the rail line, it's quiet, yes shield open or closed.
How much warmer is the tall, I was riding in cotton gloves with heaters off, no balaclava, side zippers on my pants undone to my knees plus all vents open in my jacket. Other sled with same gear, cold from top to bottom in under just a few minutes. This was at -8C or so, imagine the difference on a -20C or below day. So you wanna look cool or actually be comfortable, your call.
Windshield 101 according to me, your experience may vary. :bc: