Pros
It's really easy to get hired into sales at Insight - every other halfway decent company may want you to have experience, so Insight is great place to start when you have NONE. It's basically where you go to pay your dues, or "serve your time" as many of us refer to it, so you can get tech sales experience and then move on to a better job. Just look at it as a way to win free stuff and get some free lunches while networking with people who will all be working somewhere else someday soon and getting the experience you need to move on.
Cons
The sales training isn't very good so you're basically having to figure it out yourself. Lots of cold calling. Expectations and quotas are always changing. Compensation plan is always changing as well, making it harder and harder for you to earn commission. Upper management sets the direction and doesn't really care about how it affects the sales people, and your sales manager may care, but not enough to speak up for fear of losing his/her job.