Edited by bmeat - 8/12/14 at 9:35am
The comply tips are going to isolate the best. On the other hand, they will influence the treble of your sound a bit, according to what several people have said on this forum.
For what you're looking to pay, you can expect lower quality sound and build. So using Comply tips won't hurt the sound. Seeing as isolation is your main concern, you'll have the best luck with Comply.
I've tried the different styles of bi- triple flange tips, but they hurt my ears. I took them out right away. That was me though, you might have a different experience. If you want comply, buy ink'd. The ue 100 and S2 don't fit with comply tips — they don't show on the website.