The WA2 and WA22 were the tube options I narrowed my searches down to initially, but I'm having second thoughts. They're not off entirely the table and look quite nice, but it's also a steep price tag for a result that might have too little a difference (at least for me) for too much. My personal endgame headphone-wise would probably be the Hifiman Anandas and HD 800S for planar and dynamic respectively, but it appears solid states show quality enough results to guarantee a sound I'd be satisfied with.