If you want a top handle that starts cold after a few pushes of the purge bulb and two pulls, get an Echo or a Shindaiwa (same saw, different color) or a Maruyama (engine is an old Echo design). If you get really lucky you may still get a Zenoah/Redmax top handle at non-gouging prices. As far as saws go, none is easier to start cold than a Zenoah, followed closely by Echo. And they are excellent products to boot.
I have a new (2017 manufacture) Stihl MS193T. It would be a great saw if it weren't for cold starting. I am almost positive the purge bulb is there just as an embellishment or because somebody at Waiblingen thought it really funny to put one on it. I am used to cold starting Stihl's, but the 193 is really in another level.
Unless you want a dedicated pruning saw for precision jobs, I'd advise against the Stihl MS150T and the Echo CS2511T. They are amazing little saws, but they are also designed with a very narrow use in mind. Also, if you like to keep your chain sharp in the field, 1/4" chain is not the easiest around to hand-file properly.
