Depends on what you wanna do. Bongs for big hits and bubblers for dabs. I've hit bubblers that were smoother than bongs and bongs shittier than a cheap bubbler. Bongs hold more smoke. Other than than it comes down to the perculators used. Bongs can have ice pinches which is lovely but you can buy an ashcather that you can put ice in for the bubbler. Like I said, all based on personal preference. You ask 50 people and you will get 50 different answers. I personally prefer bongs because they are generally smoother.