Hello Cdc,
I cant speak for the others but i had the Sim I-5080 for years before making a change. I tried many equally priced int. amps and always stayed with the I-5080. The only reason i changed is because i got a great deal on the Sim I-5 Moon. Hated to see the 5080 leave though but the I-5 Moon is there top of the line Int. amp and does have a better sound. Try to find a used 5080 on this site.
I cant speak for the others but i had the Sim I-5080 for years before making a change. I tried many equally priced int. amps and always stayed with the I-5080. The only reason i changed is because i got a great deal on the Sim I-5 Moon. Hated to see the 5080 leave though but the I-5 Moon is there top of the line Int. amp and does have a better sound. Try to find a used 5080 on this site.