Sonic Frontiers- Quality and Reliability?

The SF Line 1 and Line 2 intrigue me because they offer so many features- balanced in/out, headphone out(any good?), remote control, and so on. But, I've read a number of comments about the poor reliability of the Sonic Frontiers Preamps.

From you guys using this product, can you please advise me?

Is the Line 1 or 2 good sonically?
Is the headphone function decent?
How's the reliability?

Thanks in advance for your guidance!

Dan