Hey Jace. The idea behind getting a pot without handles, is to save weight. That being said, It would defeat the purpose if you also brought along a pot lifter (which probably weighs more than titanium handles anyways). The idea is to use multi-use items. So if you were to get the caldera setup with the 550 without handles, you'll likely have to use a sock or glove to lift the pot, in combination with a tent stake to hold the cone down.
So get what you like the best. If all the gear in you pack is barebones and you're a dedicated gram weenie, go for the handle-less one. If you just want lighter gear in general, a caldera setup will already save you weight, and the extra .5 oz of handles will not burden you. Its a fine line between comfort, convenience, and weight savings, and sometimes it can be difficult to navigate. I sometimes get caught up a lil too much in gram counting to the point where im just doing something for bragging rights. haha I once took the lightest toothbrush I can find, cut the handle down, and drilled holes throughout the remainder of the handle...by the end of it all, i realized how ridiculous the whole thing was. But hey, its all in the fun of being a member of the bpl community, so enjoy!
*regarding the comment above about handles getting too hard to grasp. I feel this is subjective. It also depends on what kind of pot you are using. If i were to use an aluminum mug, with say, a fairly thick aluminum handle (think IMUSA mug), then yes, it is wayyy too hot to comfortably grab without some form of protection. But for titanium wire handles, as seen on snowpeaks or MSR titan kettles, I find the handles comfortable to grab so long as I'm grabbing the top portion of the handles. A rock climber probably would have no problem grabbing any portion of the handle due to their calloused hands. To each their own