i was wondering its one hour enough to have a good experience or it worth the 2 hour session with a risk of to much talking.

if you like her alot and wish you had more time ask her if you can extend the date. If not next time you will know to go 2. I have only rarely wanted more than a loose hour.

I always book 2 hours. 1 hour seems to rushed

ya have a good time, if provider's sched allows. Thereafter 2 hrs since ya know you'll enjoy.
My 2 cts.

Is an ample amount of time to get to know someone and get your deed done...

Most girls will do half hour sessions if you just ask.  Enough will do 15-20 minute sessions too.

Of course they would like you to pay for an hour or hell even six hours.  If it's unlimited pops and you can go for the full hour and you want to, then sure why not.  Otherwise you're a sucker.

You should only buy as much time as you need and want.  Personally I don't like to hang out and chit chat so I typically ask for 15-20 minute sessions and pay 100 when she charges 300 for the hour.

Enough girls will do this that I don't bother with the rest.

how can you afford 2 to 6 hours on a regular basis?  Why not just pick up chicks at a bar - it's less expensive!