Lots of good comments already re: pros/cons of both. I have a PT, a PT II, & a T3S & use (& like) all 3 (though the original PT is really just my backup of last resort at this point).
I use acidic flavours (clove, cinnamon, citrus), so the PT II is my main tank. Glass & no glue. Vapes wonderfully & is easy to clean. However, it is a bit heavier,...
so I prefer to use the T3S on my eGos, especially when I'm driving. It just feels better. An eGo twist with a T3S would be my ideal setup (based on how it feels/handles), but, except for driving, I've moved on to a vamo, so the weight difference is negligible. (I have a friend who thinks the weight difference is negligible on the eGos, so YMMV).
Just my 2cents worth of nonsense, don't think you can go wrong either way - or better yet, get'em both
If I'm not mistaken, the coil replacements are interchangeable, so why not