I don't itch with waxing. Some bumps for a day or so. I itch when I trim because the sharp ends of the hairs created by cutting them. Everybody's skin is different. Some people get ingrown hairs from waxing. YMMV.
Also, I've done IPL(sometimes called 'laser hair removal' even when it isn't). It seems to work to make the hairs finer if you have the right skin/hair color combination. You have to shave first for that though. You can't do it after waxing until the hair grows back.
Also when you wax, expect the hair to grow back quickly. You can only wax the hairs that are long enough for the wax to grab. At any given time, you have dormant hairs and after you wax they'll pop out as usual. I usually have to wax 2-3 times in a month then it lasts a while. Also if you wax enough the hair seems to come back thinner. I used to have really thick chest hair and got lots of zits. I waxed it and my chest hair is now thick but manageable and I don't get chest zits anymore.