Just my opinion, but you get what you pay for.
Back in my rookie days at a Chrysler dealership, I bought a CP impact. I was poor, so I thought this will do for now. Boy, was I wrong. Tossed it in the can after about 20 minutes of use. Absolute junk.
The cheapo tools are all made by the same factory in China, they then just put different labels on them.
I bought an IR 231 and will never look back. picked it up slightly used for 100.00 from a mechanic I worked with and that was money well spent. Loads of torque. As with any tool, take care of it, and it will take care of you.
Personally, I would avoid that Coleman kit, has more fluff than anything else.
Checkout Ebay and search for Ingersol Rand air tools. Cost more, but well worth the investment, even for casual use.