I'm so glad I stumbled on this thread. What a delight. I'm just starting to collect various types of phones and this now takes number one spot for canal phones. The sound stage is so much larger and the sound is more realistic than any bud type phones I have used. They sound a lot like my DT880's which is my best open headphone. They are easy to drive and you can hear the color of each amp they are plugged in to. I'm ordering more right away. They are a good match for my Samsung HS3000 bluetooth receiver.
I should add that I was surprised they fit me so well. I have no need for new tips. The fat part is turned up and fits in the ear fold, it's a good tight fit and only slightly uncomfortable. I can easily get used to the drawbacks (like noisy cord) while enjoying the great sound. I use Bartok choir works to test them. Most phones buckle under the harmony of a female choir singing at full volume. These phones do an OK job.
So what canal phones outshine these Monoprice phones to the point I should get them? At reasonable cost of course. I would spend $100 for something even better than these.
I'm a member of the $7.11 club now!