Series 3 stainless steel silver 44mm user here. Wanted to upgrade to take advantage of medication tracking, as well as the series 3 falling out of support as of watchOS 9. Also found app starting/switching to be slow relative to my wife’s SE when we’re out walking.
Wanting another stainless steel body but not wanting to pay £699 (maybe more with the Watch 8 in a few months time), Amazon were doing an excellent price on the Series 6 SS.
Were it not for wanting stainless steel, I’d have happily gone for an SE - not particularly bothered about an always on display etc. The SE has more than proven itself for my wife, who updated from a non LTE series 3 that kept having to be set up from new whenever a software update came out due to the 8GB space constraint.
If you can get a series 6 for more or less the same price as the SE, get the 6. Otherwise the SE is no slouch.