Need new sound isolating in-ear headphones

Hi all first post here.

left my headphones out of the case last night, they got knocked off the table onto the floor and the puppy chewed them up.

I need a GOOD set of noise isolating in ear headphones ( I am a professional DJ and I DJ/mix entirely in my headphones)

I previously had the Shure E2C's , which were GREAT and came with a bunch of custom tips to fit your ear canal perfectly, they are however discontinued, so that leaves me SOL. I cant find a reputable shop or any shops that i have heard of still selling them, and need them pretty fkn quick as in the next few days. The only places on ebay that have them are either unsealed (gross) used (even more gross) or located in australia (will take forever to get here).

Would like to upgrade,(Again, $300 budget) but do need suggestions ASAP, as I have several gigs next week and cant be letting some program mix for me.

I have been looking at theseand they look nice and are within my budget(less than $300) but am considering looking at some other options.

Any suggestions?

Its strange i cant seem to find a review of the shure's on here, its pretty much down to either those the etymotic er4's. The ortofons look nice but i cant help but get the feeling they are a rebranded version of someone elses stuff. I enjoyed my e2c's so much that I am a bit leary of jumping to another brand, but know that you guys know your stuff on here from reading the replies on here.

Also I dj a little bit of everything, from my work at the strip club to my nightclub bar and rave gigs. its rock, hip hop and electronic.