There is no point in spending money on a more expensive rig like a KM or something similar if you can't get a decent smoke out of your current hookah. There could be a dozen reasons why you're not getting decent smoke.
I could be wrong but it sounds like you're relatively new to hookah so you need to get the basics down first. I suggest you watch Sambooka's video here: http://www.youtube.com/watch?v=k_BCJ1xOQTE&feature=fvsr
After that it takes practice.