We are going to purchase a WS-C3850-12S-E fiber switch and trunk it to a WS-C3850-24T-E over 10G module add-ons.
We do not run any other active fiber cabling so I think I can eliminate those options, Option 4 is the most expensive but is typically what I do when trunking with 1G fiber.
The statement in BLUE and the statement in GREEN contradict themselves.
Whether or not you want 1 Gbps or 10 Gbps, fibre is the way to go. What is missing is the distance between the two switches as long-haul fibre optic modules are double the price of a short-haul fibre optic modules.
Another thing missing is the "thickness" of the cable. A lot of fibre optic installers will try to give the cheapest option (if you don't know what you're asking for) so this means OM1 for short-haul or OS1 for long-haul.
Personally, I would NOT touch a fibre link of OM1 or OS1 category. For long-haul, it's got to be OS2 or none at all. For short-haul fibre optics, it's OM4 for future-proofing (10- or 40 Gbps).
