PALE BLUE DOT
In the BLACK LEAF Bubbler than both are straight.Ataxian, what model number is your silver one? It looks like your stem sits slightly askew in the solo & I noticed mine does the same thing or is it just the angle in your picture makes it look that way?
The No LOGO Bubbler works well however the quality is a bit substandard so that's why it tilts.
The SILVER one is a M107
The BLACK is a MA13
Both my SOLO's work amazing!