I just installed the Kenwood KFC-P603 component set in my '99 Integra. It is a definite improvement over the stock speakers, but I wouldn't call what I'm getting "decent bass".
Maybe it's just me, but after having a system with sub bass, the mid bass you get from midwoofers just doesn't cut it. My system definitely has more bass than it did with the stock speakers, but it's just not enough for me.
If you want decent bass, but you are not willing to install subs, then you better get some power to whatever you put in the doors, otherwise you can't hope to get much of any bass out of them.
As for the guys telling you to go with 2- or 3-way speakers, don't do it. Your doors are designed for components, so there is no reason not to get them. Besides, the worst part of the install was the fact that I had to modify the stock spacers/brackets to allow more mounting depth. I suspect that the 2- or 3-way speakers they'd sell you would require this as well.
Good luck with whatever you choose to do.