For many people the lack of a remote control is a dealbreaker. It is not a dealbreaker for me.
For me it is a bit problematic that the Lamm LL1.1 Signature is a single-ended only design, and the Io sounds best using its balanced output. (The LL1.1 Signature has an XLR output connector, but it is "balanced" with only a transformer, and not with a true differential circuit.)
I think the output impedance specification of 16,500 ohms is a typo.
The Jadis, also, is single-ended only, with no remote control.