I do like SET amps, and I have compatible speakers and can therefore largely sidestep their biggest tradeoff (lack of power), but that does not mean that I don't appreciate other kinds of amps equally.
The amp that is currently in my system, which I like very much, is a 5 watt pushpull amp. It is a terrific amp for my system. Is it great because of, or in spite of, it being a pushpull amp? I have no idea. It is different in so many other respects from my other favorite amp (parallel single-ended 2a3 amp). In addition to being pushpull, it uses a different combination of tubes (348 and 349), it has transformer inputs (matches my linestage's transformer outputs), etc. It does have a somewhat generic sounding bass response--not as tuneful, and varied as the bass from my SET amp and not as open on top--but it is punchy and very sweet sounding in the midrange. Every choice has some tradeoff.
On top of solid state vs. tube; pushpull vs. OTL vs. SET, there are almost infinite variables of tube choice, parts choice, specific design, implementation, etc. This is both part of the fun, or frustration, depending on how you look at things. If one insists on identifying "the best" in even one category, that would be largely delusional. I just look for what sounds good to me, if there is something out there that I missed, perhaps I will find it later; that is part of the fun.