Best way to trunk Cisco 3560-X switches

Hello,

I currently have 4 Cisco 3560-X switches.  1 is Layer 3 enabled and is used as my core switch.  The other three are POE+ and are used as my access switches.

As of right now, I have three etherchannels comprised of two ports each, and each etherchannel on the core switch connects to one of the access switches.

I am at a quandry because I would like to consider connecting them via 10 gig uplinks.  The problem is that the 3560-X can only have two 10 gig SFP+ ports per switch.

So that means I would have to use a cascading method, connecting the core switch to the first access switch, then the first access switch to the second, etc.

Is 10 gigabit that much faster that I would not need to worry about the extra hops the data would take from switch to switch in a cascade configuration?

Keep in mind, everything is running great as configured and the amount of data passing from the core switch to the access switches is not overwhelming the regular 2 gb etherchannels I currently have setup.

I just want to know for future consideration.

Thanks so much!