Not sure how directly applicable this is. I drove a 2010 lifted tacoma, with OME coils and bilstien 5100's before I sold it for my current '03 T4R. I had 2 issues with my Tacoma's suspension:
1) better, firmer than stock, but still bouncy and brick like. Supposedly this was more of a tacoma thing, that we don't experience in 4runners.
2) Stock UCA's. SUCKED. I was lifted barely 2" and my alignment just wasn't the same. I definitely felt the "floaty" sensation people talk about with lifted trucks plus stock UCA's. Bump steer was significantly increased.
3) Paying someone else to install, without doing my research on them: they broke one of my ABS sensors, didn't align well, and were terrible to work with. I didn't do my research on a good shop, got too lazy to install myself, and just had a random shop do it. Biggest mistake of all. Installing shocks and springs is not complicated, I could have done it myself, enjoyed the work, and gotten a quality alignment from my regular mechanic, and had a much less stressful install process.
Overall, while my truck drove and tracked near straight, and it handled tightly, but steering and handling was in some ways NOT improved over stock.
After that experience, I will never again lift a toyota with any sort of lift, without
1) upgrading to adjustable UCA's
2) spending $$ on a good, EXACT alignment after the fact
3) choosing softer valved shocks meant for loads and offroading
4) installing the lift myself
Have a full Dobinsons kit in my garage, waiting to be installed on my T4R, including Dobinsons UCA's. Expecting much better results.