PSVane 300B comparisons wanted

In December I bought a set of PSVane Horizon 300bs for use in my Elekit TU8900 with Lii Audio F15 open baffle speakers. I like them but I don't have previous experiance with 300Bs.So they are only a datapoint of one.  I wonder if anyone out there with more experiance than me and, hopefully, similar equipment can offer some comparisons with other brands of tube. My frame of reference are my Dynakit ST-35 and my Decware SE84UFO, both of which are EL-84 powered amps. I find the ST-35 the cleanest sounding of the group followed by the TU8900 with its PSVanes. "Clean" is good, but I also enjoy the low order harmonic distortion so frequently equated with "tubey" sound. The Decware amp is sweet but has a slight hum problem which I am working on eliminating. All in all I think it fair to say the 300bs and the el-84s are not worlds apart. Actually kind of similar sounds given how difficult it is to focus only on the power tubes and smooth over the differences in the amp circuits and driver tubes.