I 100% Disagree. Ride is subjective, but this statement is not accurate.
My factory ride was atrocious and bottomed out frequently.
OP, I lifted my 4Runner with Toytech (Eibach) front 3" Springs and Bilstein 5100 shocks, left at the bottom position. The rear was lifted with Old Man Emu 891 and Bilstein 5100 (For Tundras, in order to reach 3-3.5" lift). The ride is great. the 891 rear springs are their HD springs, they are in no way harsh, like I was worried about. The ride is great with this setup. I achieved exactly 3" up front and roughly 3.25" in the rear when unloaded, after it settled. I got everything I needed from Wheeler's offroad. If you order through them, I'd have them assemble your front struts, trust me, its worth the money... I spent roughly $850 on this, shipped. I also got some other stuff from them too. So, it can be done for less than a grand.
Sometime people do complain of a harsh ride with the OME 891s, but I think that's when paired with the OME shocks. The Bilsteins are great and butter smooth.
Theoretically, the longer your spring is, the softer if can be to compress under the same weight. So, if you get a quality spring (OME/ARB or Eibach) the longer spring should or could be softer, giving you a more comfortable ride since it has more room to compress, it isn't as stiff. Shocks play a large part of this as well, as they can help to control the speed at which the suspension compresses.
At 3" lift I had a driveline vibration from the rear U joint on the rear Driveshaft (Front Driveshaft is unaffected by the lift) and had to replace the Ujoint, I took it to Driveline shop and they total for parts (Toyota) and labor was roughly $75.
Here is my install of the parts, suspension starts on post #4:
Build thread-Mothra the budget camping rig