A second-hand DC is a good investment. Plus, if you decide you want to protect your hearing that little bit more, they're easily converted to ANR using a kit from Headsets Inc. This a cheaper alternative and works well.
I have a standard DC which I use for my students
A second DC which I converted with the Headsets Inc kit, which I use for aerobatics and open cockpit flying because it's easy to fit in a cloth cap.
A Bose A20 which I use for the rest of my flying because it's lightweight and I use the Bluetooth function on occasion.
I have used the Lightspeed Zulu, and I know many fans of it. For me, it didn't fit my head so well, and after an hour or so of flying it was uncomfortable so I reverted to my converted DCs. Although these were heavier, they fit me better. So it's worth trying out different headsets in different conditions so you can find something that suits you.