sorry for wall of text incoming, this turned out longer than anticipated.
*quasi-short version:
Get the platinums if you liked the original "gold" headset.
To me, the platinums are a complete upgrade compared to the original "gold" wireless headset, imo;
-platinums sound better
-platinums have better build quality
Comfort is subjective but i find them fine (with a "normal" sized head) and inline with sony past iterations (gold and pulse).
If you found the "golds" comfortable, I did, I'd think you'd find the platinums the same. Obviously, YMMV.
I also use them plugged into my xbox controller while using my xbox one x, sound great!
*long version:
Love the platinum headset, no experience with new gold headset though but did have the original gold and pulse elites headsets previously.
I liked the pulse elites but broke/cracked where that big silver circle-thingy is located on each side of headset.
Replaced pulse elites with original gold headset; liked those but mine eventually broke at the hinges.
Replaced gold headset with platinum, really like them and currently have no complaints.
I mainly play single player games with an occasional Destiny 2 mixed in so they've been great with my usage.
Comfort wise I find them similar to gold from my experience...
a little bit heavier but like the gold's I've used them for what i consider extended gaming sessions (i.e. 2+ hours with longest being somewhere in 4-5 hour range)
i don't wear glasses and believe I have a standard head in that I don't have issues associated with head being too large/small.
I also use them frequently with xbox one x and the dolby atmos for headphones feature (plug platinum directly into xbox controller)
Frequently used to switch between a pair of Sennheiser 360 headphones and the platinums on the xbox console but ultimately decided the sound quality, to my ears, was better with the sony platinum headset.
*all of sony's first party games sound excellent on the platinum headset.
games that utilize the 3d sound are pretty neat too while vss (virtual simulated surround) is kinda hit or miss on 3rd party titles.