I tried the EH tube, but it's not for me. It has good bass extension and sound stage, but the treble is too bright (and slightly strident) for me. I've probably had the tube running for 30-40 hours before giving it a good listen today. Maybe it needs more burn-in? Anyway, back to the stock tube for a while - and I really like how the Saga sounds with the stock tube! The Tung-Sol is next.