OK...
Flux • It has a really beautiful and clean interface, and it makes it easy.. with a combination of CSS and HTML (Both you can write and modify within the app..) you can create a great Website with this application!! It's a drag and drop interface... and mixes Code with Design.. but in a great package..
Coda (W/ Changes.app support installed) • Well... it's Coda isn't it!! Ok.. that's a bit bland.. I only use it for the Editing and Designing features.. and I now use Espresso a lot more... but I have had it since before Espresso and Flux, so well.. You get the idea.. I'm used to it!!
Expresso (Again, W/ Changes.app support installed) • It's like Coda, just a bit more unfinished.. I got it in the Mac Heist bundle... and it's turning into a great app.. it's only early version 1... but it could be great (Judging by CSSEdit and Mac-Rabbits coders!!)
RapidWeaver • Is for when I am really tired, and just need to knock something up quickly for someone... There really isn't any code involved (Well... you can do a HTML Page) but in the end.. it does it all for you quite well..
TextMate (And again, W/ Changes support installed!) • This is my Hard-Core text editor.. I use this all of the time, and it has a permanent place in my Web Design dock... It's
very customizable... and for that reason i'm not changing it in the distant future (The other reason, was that it was E-X-P-E-N-S-I-V-E!!)
I also sometimes use the Text Editor that is built into Flow, for quick and easy editing when I am in a rush...
I have mentioned
Changes, it allows you to review, compare and change code inside of your favourite editors..
I have linked to them all...