I found another seller, this time $80 including shipping, and they are sending 3 sets of phones. The MM 450-X, the MM 550-X and an orange and white pair that I’m sure I can palm off on a grand-niece. The MMs originally sold for $349-$399, although some sites list the 550 even higher.
Had some communications with the seller prior. I like the idea of the MMs because they do work well with my iPhone, and I will be able to use them either wired or wireless. Apparently noise cancelling only works wireless, as do the phone connections. I did test that on the pair that arrived with the broken noise cancelling, and people on the other end of the call reported that the mike was nice and clear.
I wasn’t looking for the 550s, but I will be able to compare over and on the ear models. I certainly don’t mind them being thrown in. I figure that if they are in good condition, even if I buy replacement earpads (I do clean them carefully) or a replacement battery, I’ve done good for $80.
The 450-X is difficult to find - it’s still on the Sennheiser site, but several sources say it has been discontinued. I don’t see the MM 550-X on their site, but it is similar to the PXC 550.
The Urbanites do look very nice. Would you say that the bass is simply low and extended, or is it boosted relative to the rest of the spectrum?