When u guys send someone a text....how long do you expect before you should get a response? Me personally, if i have my phone with me i text back usually within a couple minutes of getting it.
Im noticing lately that when im texting someone(usually women and younger) it takes them hours sometimes if not the next day to reply. Fuckin annoying
Turn off "read" reply, then they wouldn't know you read it yet.

Anyway, it depends on the person and time:
Business person during normal work hours, as quick as possible
Personal during normal work hours, you can wait until after work or lunch time
Business person after work hours, you can wait until business hours
Personal after work hours and before 9pm and after 9am, pretty quickly
female during work, before a couple hours
female after work and before 9am, as soon as you have a good response