Which track frame has the best geometry?

In terms of handling, is there really that much difference between proper track geometry frames? Say, like between a Fuji Track and a Bianchi Pista for example? Or any other true track geometry frames out there (so discount, Langsters, Surly Steamrollers, etc. etc.), which would you say had perfected their geometry in terms of flickable, responsive, handling without being overly twitchy? Cheers.

For a confident flickable sensation as though the bike is directly under your ass and is turning on rails: Short chainstays.

For a fast handling in that the bike responds very sensitively to your weight shifts: Steep headtube angle

if you want a stable bike that works well at low speeds and still is very fun (not quick, but flickable) to handle, you sould look for a bike with relatively relaxed geometry and a short chainstay. You'll need to find the right gear ratio which allows you to run the shortest chain length you can.

Also raising the handle bars (riser bars), and getting short stem (MTB/BMX style) puts your weight over the back wheel can increase the "flickable" sensation.

True track bikes have very steep angles don't come into their own until you get to higher speeds and are relatively twitchy at lower speeds.