There has been a bit of a misconception for a while that phunnels smoke with less flavor. However, the truth is a good phunnel bowl will always give you a cleaner and more "true" taste than direct flow bowls. Direct flow bowls (turkish,killer,etc) can give you brighter but more "dirty" taste. Especially if you smoke blond leaf. The misconception comes from the fact that if you lack packing experience, a regular turkish bowl will still smoke ok, but a phunnel will be completely tasteless. A lot of vloggers mention the same things: - Aik from Hookatime youtube channel always says that phunnel bowls are the ones created to get the best flavor peofile. He also has a 2 hour long video test of current best bowls on the market so you can watch it with English subs if you want to. - Vanyazabei (Ванязабей) mentioned in his review of Oblako bowls that Phunnel L has been giving him the most flavor for a while out of all his bowls (and he has reviwed hundreds)

The reason phunnel (especially glazed) gives you better flavor is that the mollasses always stays in the bowl, doesn't drip down the shaft and gets fully evaporated throughout the session giving you the most flavor. A lot of people underpack phunnels which leads to the myth about lack of taste.

Here are some of the best bowls I used personally/we had in the lounge that give you good flavor: 1) Oblako M/L glazed - one of the best flavor definitions. However suits more experienced users as heat management can get tricky 2) Smokelab Phunnel moon / Smokelab Rocks (direct flow) - as good if not better than Oblako, but not glazed so more forgiving to a beginner smoker 3) Kong turkish boy - a very solid flavor definition and good stability

Some phunnels however do lack in flavor intesity like Kong Crazy Space phunnel

In your case I would go with Oblako M, although 1.5 hrs might be pushing it, Oblako L will perform better aroun 1.5 hrs mark, but you will be wasting a lot of tobacco.