The Spatials from your list are the best options.
The musical choices have nothing to do with it. The simple fact is that Harbeths in general are designed for solid state and are usually not that easy to drive. You only have 50 watts and using the 4 ohm tap puts your amp at a disadvantage- since it may well lose an octave of performance in the bottom octave. The same can be said to a lessor degree of the Vandersteens, which have a low impedance in the bass.
The Spatials on the other hand are a very nice tube-friendly impedance and they are also noticeably more efficient. Their only disadvantage might be that they need to be about 5 feet from the wall behind them in order to do their best work.
Good Luck!
The musical choices have nothing to do with it. The simple fact is that Harbeths in general are designed for solid state and are usually not that easy to drive. You only have 50 watts and using the 4 ohm tap puts your amp at a disadvantage- since it may well lose an octave of performance in the bottom octave. The same can be said to a lessor degree of the Vandersteens, which have a low impedance in the bass.
The Spatials on the other hand are a very nice tube-friendly impedance and they are also noticeably more efficient. Their only disadvantage might be that they need to be about 5 feet from the wall behind them in order to do their best work.
Good Luck!