If you are talking about an AN Kit amp, I don't think they are affiliated with Audio Note (uk). They have put together similar gear based on Audio Note design and buy those parts that Audio Note offers to the market, but, that does not mean they are as good as the real deal. They may be a good bargain, but, that is not to say they are the same.
Still, I generally like good EL84-based amps because they are lively, and punchy without sounding hard and brittle. I prefer that tube over something like a KT88 or 6550, KT120 or KT150 or other more powerful tubes. Some EL 34 amps are decent, but, generally, I prefer 6L6 or KT 66 the most among pentode/tetrode tubes in common use. There are exotic types, like 350B and th3 349 that I like even more, but, those are extremely rare and expensive (I own a 349 pushpull amp that puts out a whopping 5.5 watts per channel).
Among low-powered triodes, my favorite is probably the 45, but, it is a very low-powered tube; that tube would be followed by the 2a3.