Alternatives to Cisco 5k with 2k fex in vPC

Hello all

I wanted to ask if there are other vendor technologies similar to the 5k and 2k Fabric extender switching which can be considered as an alternative.

Effectively wanted to keep the costs low and with the 5548UP no longer in sale. Perhaps it might be time to see if other vendors are doing this?

Peferrably would like to use the vPC functionality to dual home the fex to the 5k.

Thanks for any advice.