Devpac is a great assembler package that set THE standard. There are some other assemblers that have surpassed it in some ways. Many of them are also free where Devpac is not. Examples of FREE Amiga assemblers...
I've tried all of those assemblers you mentioned they all have good points & bad points, although I do use BarFly quite regularly for debugging. I just prefer Devpac as I've used it from the start and prefer it's nice clean clutter free way of writing code. Plus I have my own quirky way/style of writing code that suits best to DevPac.
Sometimes too many extra features can be a hinderance rather than a benefit when it come to writing a long piece of code...

Anyone looking for it just google and ye shall find...
