If using a bridge hammock, pads work very well. I like the NeoAir and Exped UL Synmat, both are the largest size, about 25" wide. I use them with the WBRR and other bridge hammocks. I also own 3 Warbonnet Lynx UQs, and I love the fit and comfort.
Currently, I am more likely to bring a pad. The advantages for me are that I remain sleeping on my back with only minor adjustments towards side sleeping. In any other sleeping arrangement, I toss over to both sides, and over on to my stomach, and alternately curl into a tucked position. I sleep sounder and less interrupted on my pad.
Also there is the wind factor. Bridge hammocks spreader bars make tarp set up wider, allowing strong winds to blow under and steal the warmth from the UQ. That does not happen when the hammock has a full length pad in it. I can also set my bridge up lower to the undergrowth if I don't have an UQ that I need to protect. Of course, I could get a tarp that is larger than the HG hex that I am now using.
On the downside, there can be condensation, and the pad does not feel as nice against my skin as the hammock (The Exped is OK, but the NeoAir fels a little "plasticy"). Anyway, that is my opinion, and I have spent many years of hammock hanging dialing it in.