Delphi forums are the best, and have the best format and easy to use interface out of any forum IMO. Unlike you, I started with both Delphi and Ultraboard type message boards, whereas I'm sure you've been used to such Fusetalk formats.
With delphi you :
-Can easily tell who's replying to whom, as opposed to here because many people neglect to type in a person's name or quote them, and just spew off random comments. You can just click to get to the message that's being replied to, as opposed to here where you have to go through each of them manually, which in a thread of dozens of posts is very hard to do.
-Don't have to scroll through every single friggin' message to get to the one you left off at, it's left off right there. And for forums like this, it makes it hundred times more convienient because VERY seldom do people make posts that are longer than ONE line.
-E-mail notifications come only when a message is replied to YOU, not to random comments said in a thread that forces you to click to each irrelevant reply in a thread
-You can easily tell which threads you've participated in with the icon
Fusetalk definitely has its advantages, but Delphi is quite awesome as well.