The glass bottle is nice and the sprayer on the 30ml bottle is very robust. Vendors who use plastic bottles with lousy sprayers should take note...
From what I recall I don't think they offer any of their blends in 10ml bottles. I like small bottles to keep in a travel kit, but they do have a tendency of crapping out by either giving up the ghost totally or by either sputtering or only a portion of a spray / dose.
I'm actually going to purchase some 10ml vacuum pump bottles on Amazon so I can put some NAG and SXD in the travel kit without dragging the large bottle around.
Just thought I'd add this. For the last few days I've been using Escape the Friend Zone and I noticed that the PT supplied sprayer seems to apply about double amount when compared to the typical 10ml bottles I have from PXS and have previously purchased online. This is something where a spray isn't necessarily a spray.