I was wondering if anyone had some tips on using the delay, maybe some cool ways of making things flow kinda how Dakim and Teebs use it? Ive learned how to use the dakim style but wondering if there are any more nifty tricks in using the delay with the 404sx? Much appreciated

apply it to your hi hats and percussion to get an interesting swing

Yes, you could try delay on separate hits to create rolls. Or just dub out completely. Check out these tips on how delay is used in dub:
http://www.interruptor.ch/dub_fx.shtml

I use delay for vocals, with reverb. It's a lot of fun

I use delay for transitions between beats. All 3 knobs set to 1am/pm (delay is T4) and as soon as let's say the snare bit comes (or the kick, whatever works best) I hit delay and then [hold] 1/4 a mesure later so the beat stops and you can only hear the fade-out with the portion of the beat the delay recorded. Then I introduce the new beat.
90's hiphop type of transition.

Hell yeah thanx for that tip man ive been looking for different ways to transition between samples and that is deff something i will be using. ive been using the isolator but its super tricky and im not smooth with it i will deff try this out when i get home today

No worries at al mate. See this video for example:
https://www.youtube.com/watch?v=ArDys0j1TTA

Same settings as explained in the previous post, I'm messing with delay on the first 1/8th of my "main melodic sample" loop to introduce the main part of the beat, as well as my "outro" loop for a potential transition.

Hope this helps!