This is pretty doggone interesting!
Here’s a brief podcast created by Tim Keenan at Creative Media Recording, 
an audio post-production studio, in which he enlisted my help at remotely recording a portion of the same script using the newest digital recording technologies;
ipDTL, Source-Connect Now, and the 40+ year-old ISDN.
Listen to the back-to back-comparisons in Tim’s podcast .
Can you hear any differences?
Hi Bobbin! Thank you for doing this test. If anything it proves that ISDN isn’t clearly the best (if at all). I like the ipDTL and the Source Connect Now the best. The SCN is the best of the bunch, but I think that’s because while you sound great on all three takes, your voice is a little richer and lower on that one. For example, especially on the ‘witnesses who, in passing,’ part. It’s tough to pick which service to go with. ipDTL has better Chat and a great Script editor, and I like the Link + URL. SCN has conferencing capability, and it’s free for two-way 128kbps. SCN just started an embed feature, so you can have it right on your website. http://lanceblairvo.com/lanceblair-source-connect-now/ which is connected to my contact page.