Corsair K60 has no Blacklighting, only their K90 has the Blue LED lighting.
If your going with the blue lighting I would only recommend either the Razer Widow or the Corsair K90 as their build qualities are up there. Though I think the Corsair K90 is better built as it has a chunk of Aluminum as the base plate for where the keys are. This is assuming you still want a Mechanical Keyboard with Blue back lighting.
The only Logitech Mechanical keyboard is the G710+ and that only has WHITE LED back lighting.
I'm not sure if you'll get used to Mechanical keyboards but for gaming, I don't think I would like all that clicking it makes. It would annoy the crap out of me. I've always loved the G15 as my keyboard of choice by Logitech, but I've just recently upgraded to the G510 for the custom lighting to RED as the G15 was only Blue. These keyboards aren't mechanical btw, I find the keys on the G510 to be slightly smaller than the G15, at least it feels that way, maybe I'm just not used to it yet.
I haven't played around with the G710+ but I'm sure it'll be the only mechanical keyboard I may like as it's suppose to not click anywhere near as loud as others do. But only issue with the G710+ is it's only WHITE LED back lighting, I'll wait until later when a red one or a multi -color one comes out. Then again I only like using Logitech keyboards and mice.
I find Razer products feel cheaply made same with the steel series stuff, I just don't like the type of plastic they use. Corsair's keyboards are nice, but I just don't like the floating keys' concept, feels like you can get a lot more crap into the keys such as dust, and or food bits if you eat near your computer. Feels like it'll be an eye sore when it comes to collecting garbage in between keys.