fiber to the desktop - which connector

The main benefit of LC over SC is the form factor. An LC connector is similar in size to an RJ45 jack whereas an SC connector is about twice the size.

I have not found any differences in the durability of the connectors.

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LC basically, anything else is folly.

Apart from not bothering given most machines struggle to saturate a 1GBps copper GigE link both ways, even then what is going to offer you fully non-blocked transit out of there other than multiple Cisco Cexus 7000/5000's?

But if you want to waste your cash then the answer is LC.