Spinning Reels With A Trigger ?

Hi,

I have had a Shimano Stradic spinning reel for many and many a year.
Like it a lot. Smooth, and has been trouble free.
But, am always on the lookout for something "better."

I saw some posts about the Shimano ones with the trigger.
So, when I was in a sporting goods store I tried to look at them and
find out about them, as I have never used one.

Unfortunately, they are all in a plastic, sealed, wrap, so no luck in
playing with one.

Let me ask, please:

Do you folks like them better than the conventional, non-trigger type ?
Why ? Pros and Cons ?
How popular are they; are they taking over from the conventional design
now ?

When you press on the trigger getting ready for a cast, does that also
open the Bail ?

Do you release the trigger at the final stage of the cast, similar to
what one would do with, e.g., the Zebco closed face "button" reels ?

Does the trigger have any function when you are ready to retrieve ?
e.g. does turning the handle close the Bail like in a conventional
spinning reel ?

And, when casting, do you (still) use your index finger to hold the line
against the rod prior to the release ?

- does the finger press the line against the rod, OR, with the
trigger design, is the line is supposed to be held against the trigger
itself prior to releasing it ?

Any thoughts on how these work would be appreciated.

Thanks,
Bob