I think everyone is different when it comes to tolerance level. You have to account for alot of factors. I weigh 143(last time I checked, been eating alot lately so I might be heavier) but my girlfriend is over 200. I can smoke 2 bowls and get high and she has to smoke almost twice as much to get the same affect. She has been smoking longer than me as well, so that is another factor.
I used to live in Texas and the weed there is primo, especially in houston and san an. Its inexpensive and does the job quite well. You can get a blunt for five bucks, and here in nevada it'll cost 10 to 15 depending on where you are. So yeah, Texas rules. Oh and lose weight for a better high.