Re: Opinions requested on first tube amp.
I think for your favorites, the Class 5 sounds to be the natural option for yourself but, it seems that you don't like the available headroom.
If you are thinking on to have a nice clean foundational tone and work the dirty part with some pedals, I would recommend you to include in your list the Vox Night Train, with power enough (15W), headroom enough and stunning cleans. I saw a thread in this forum saying that they are selling that cab for about $200, what is ridiculous for such a nice amp. Just a single channel amp. Even that can do very good driven tones (mode thick) you can not swap the channel on fly.
Its very easy to maitain (two pre-amp tubes, two cheap EL84 tubes), has that British vibe and, its really nice to transport, hunging from your shoulder.
Stock sounds really nice but, as soon as you swap their pre-amp tubes (at least) for anything just a bit better (cheap EH 12AX7 could be ok) the amp sounds incredible good.
Another great sounding amp for a nice price is the VHT Special 6 or the Special 6 Ultra. Those sound closer to Fender's and mount 6V6GT tubes. For the price they are really good and, don't be fooled by their 6 Watts, they sound loud enough for just home practicing. Also not switchable single-channel, even that it has a boost switch that overdrives the pre-amp section (and increasses loudness in, at least, +3dB). Tone/price relationship is outstanding.
But, honestly, for your musical tastes, I think you will feel more at home with that Vox Night Train.
Throw a couple of Mullard 12AX7 reissues in the pre-amp and a couple of Mullard EL84 reissues (late, when you can afford them) and be on Heaven.
At least, swap the stock Sovtek 12AX7-WA tubes with a pair of cheap JJ ECC83S tubes and, if possible, a couple of JJ EL84. This is the minimum I would do.