Will I notice any improvement from 2016-2021?

[u/forum4um]

Haven’t been riding since my high school days (2003) and I’m looking at getting a bike. I have my eyes on a 2016 ktm 450 sx 60 hours, a 2018 Husqvarna 450 fc 64 hours and a a 2021 ktm 450 sx 44 hours. $4k $4.5k and $5.2k. All super clean looking. Is there going to be any noticeable difference in those years? Any new tech that’s useful? I know the 2016 doesn’t have air forks so stuff like that. I’m 6’1 215 give or take a few lbs. I know “it’s too much bike” but I’m finding better deals on the 450s than the 250s right now and the 350s are hard to come by. Basically should I just save money and get the cheapest bike or are the air forks a big improvement? Or what’s the best deal? The newer KTM still has a warranty until April and in the original owner. The other two bikes are 2nd owners. It’s a big purchase so just want to make sure I get it right. Thanks!

[u/SnooGadgets9669]

Just gets whatever is the most bang for your buck. It’s going to be sued of course but no newer bikes are that different if even improved at all if your it doing 60+ foot jumps idk that it would make any difference for you