I dont know about the ST's, but the SST's are solid performers. That would be a tough choice.
For about the same price you could try a Pass Labs X250.5. It's a fantastic amp and could very well cure the "curiosities." Well, at least for a while anyway.
For about the same price you could try a Pass Labs X250.5. It's a fantastic amp and could very well cure the "curiosities." Well, at least for a while anyway.