LTE: Consistently 5-20Mbps down. In the first couple of months after LTE went online here (5ish? years ago), I could get more like 90-100. It dropped into the 20-ish range and never went back up.
5G: I have UltraWideband coverage at my house, and I can get 200-500Mbps download speeds.
Will 5G just drop down over time (as usage goes up) like LTE did? I dunno, maybe. But, for now at least, 5G(UW) has been much, much faster for me.
There's a stretch of driving I've regularly done which goes through an unpopulated stretch of the US. I've watched the tech tick up from 2g, 3g, 4g, LTE, and now 5g. Yet the download speed remains at sub 1Mbps speeds.
My assumption is they are still running the same copper/fiber that was buried to the tower 20 years ago while updating the receivers.
20 year old fiber? Upgrade the optics on both ends for a couple grand and you are up to date again.
So, I guess what I'm saying is, if by "5g", you mean "the giant new swaths of high-frequency spectrum that carriers are building out", then 5g is amazing. Otherwise, it's nothing to even bother noticing, as a consumer.