Why do you sugest SE version over balanced?Almost NOBODY likes Pac with 300b and when they do, it tends to be EML 300b XLS or Takatsuki.
You should have tried PX25 or 242, the current fan favourites. No need to spend a lot of money on tube rolling and DONT get Balanced, get SE. Also make sure you gave a good transport and FTA cables. LoL
On another note, try also the cheaper Atlantic GA TRP with engine53 with RK 5u4g recti and GEC KT66 vintage tubes!
Whatever you choose, I hope you are happy long term!