Now please forgive a really dull post...
STC / TPC spray vials are okay but European ones still better (faves Violetta and First in Fragrance)! Happy that LTDUF is finding a new home!
The technique to get juice out of a stick vial: open the vial (the hard part 
- you may need DH or pliers). Put the stick on the table. Seal the vial with your wrist, rotate your wrist holding the vial tight. Move the vial to a different spot on your wrist and repeat 3-6 times or until you actually smell something. The stick is utterly useless. This is the el cheapo packaging option that Les Senteurs favored when they still shipped overseas. It's okay for tiny samples but annoying for larger quantities.
A variant of the stick vial is a dab vial: it's a stick vial without the stick. The cork is actually a bit hollow and it works like an ad hoc pipette. Hold the vial, inverse it, return it back upright, remove the cork. Lo and behold, a drop of perfume is trapped inside the hollow part of the cork, dab it on your wrist. Repeat a few times if necessary. I quite like this way of applying perfume and many of my Guerlain and Kilian samples are packaged this way. Neroli in Hungary uses dab vials where the pipette function is pretty useless but at least they don't come with that annoying stick. They have the best convenience/price ratio of all sample providers I have tried. There are also vials where the cork is a simple rubber on without pipette functions. Some Flaconers use those. Other Flaconers use actual brown pharmacy bottles with a built-in eye dropper...
Then there are rollerballs. Some people really like them but I never seem to get the dosage that I want out of them. A couple of perfumes I have - Eau de Tarocco by Diptyque and Mona di Orio's Tubereuse - are packaged this way and because of the annoying packaging, I rarely wear them.
My favorite methods of applying perfumes are spraying for most perfumes and dabbing for strong perfumes and extrait concentrations.
SOTD Rotting narcissi...