The one above on the Ti PO 8500 LM and the NOS SM300 are the Omega mesh, and they're the best of them all. But the Strapcode is very close. The Strapcode is on the SMPc chronograph. I'm not using the generic eBay one right now, but I did try it on the PO 2500 and you can see the clasp in one of the photos.
I have the Strapcode ones with the ratcheting adjustable clasp, and the quality is very good. But the buckle is a bit larger than the ones on a PO or SMP. (in thickness and length). This makes resting my arm on a table a little weird as the buckle pushed my arm up off the table more. The generic eBay one has a smaller clasp (photos tomorrow) and it's just as comfortable resting my arm on a table as the Omega shark mesh (small seat buckle clasp), but it gives up quality in the clasp.
The generic mesh's clasp build quality make me worry that the pin holding the hinge together could fall out with a lot of use, although the mesh itself can be very nice. I had to buy a pair of the eBay straps to get 2 pieces of mesh that had all the rows of links line up straight, and then I gave the other 2 pieces of mesh, that seemed to have the link rows running a little crooked, to my son.