The HF-2 Hi Band Flanger's emphasis is on flanging the overtones and thus you get, what I've found to be, a more gentle-sounding flange. I like mine quite a bit. It was my first
Boss pedal that I got as a Christmas gift from my father in 1988. I set mine like this:
Manual: 12:00
Rate: 10-11:00
Depth: 2-4:00
Resonance: 10-2:00
I recommend the DS-1 directly after the guitar. Other effects I recommend through an effects loop if you have one but afetr the DS-1 nonetheless.
Wah pedals.......play with the placement since that can vary the result significantly (even before the DS-1). I like the response above. It's traditional and works for most people. Another nice sound is having the chorus AFTER the delay and/or reverb. These days I reverberate last but I have a few effects between the delay and reverb.
No rules here.
Mike 777 Haug