As someone who dislikes the marmite IC75 seats, a 377/5 was vastly preferable on Thameslink to a Sunday HST on Thameslink even though I’m sure many would consider the faster EMR service Premium.
Similarly, I’d take a Southern 377 to Portsmouth/Southampton over the faster South Western Railway service, as I like their 377/1-4 very much and find the Desiros boring and the 450s uncomfortable.
I also know that tatty 465/9s are considered outer suburban whereas I’ll take a “metro” 376 anyday.
I also vastly prefer the driving vehicle comfort of Southern 377s to the Gatwick Express with the 387s which I hate.
Oh, and I’d rather take a SWR “Suburban” 159 service to Exeter than a GWR Intercity service operated by a Hitachi tbh, though that’s partly down to the IMO dire announcements of the patronising Welsh woman and the man who does the safety announcements who sounds like he’s trying to be intimidating but fails embarrassingly.
I don’t like 80x (LNER excluded) so I’d rather take the Hull Trains 180 and TransPennine Express 185 over the bland and boring Paragons and Nova 1s (Nova 2s are however amazing) that were said are massive improvements.
Oh and as a devoted Sweden lover, the aforementioned Arlanda Express which I have been on is a waste of money as while the cheaper Pendeltag is indeed a bunch of cheap plastic crap, the just as cheap SJ X40 that serves ultra nearby to the airport Marsta station offers far superior comfort and views to any other train connecting the airport with Stockholm.
I love the 332s, so no complaints of the Heathrow Express as of yet. That is, until the dreaded 387s come along. Then I think we’ll be onto National Express instead