God help you if you start frequenting head-fi; that place can become an obsession!! I speak from experience. In any event, what's your budget? Yes, you can get IEMs that kick out unreal, tight, punchy bass.
From my relatively limited experience, a cheaper way to start is looking at something like the Klipsch Image S4 (~$80 shipped from Amazon)... I have those, and they're o.k. I also have a pair of on-ear portable Audio Technica ATH-ESW9 (not bass monsters, but punchy & tight (~$250; do NOT buy these from eBay or if the price is significantly lower--there are fakes being sold by the truckload); finally, the IEMs I just bought: Monster Turbine Pro Copper IEMs. Monster has a bad name amongst many b/c of their over-priced, over-hyped cables, but man, they got it right w/ these IEMs. Unless you can find a good deal, they'll probably cost ~$350 (I think $379 on Amazon right now). HOWEVER, Dell.com has them for an unbelievable $175 right now (though we head-fi'ers bought them all up, so there is now a 1-2 week delay)! 😀
Good luck in your search..