vPC/MLAG vs L3 Topology

Dear Reddit,

So I was recently promoted to the magical and sometimes soul crushing position of Network Engineer at a non-profit IT company that services a lot of non-profits in the area. There are tons here because there is a large industrial company here in the city that gives money to all these orgz as a tax write off. Anyway, we are looking to redesign our network, and one of the things we are looking to do is move our core network to Layer 3.

I understand the concept behind technologies like vPC and MLAG, however I was wondering if it would be better to just have L3 links between switches instead of aggregating them with these techniques. I understand from a L2 perspective it makes sense to aggregate this way to prevent having to deal with STP and also utilize links better. But wouldn't something like L3 etherchannel provide the same kind of link utilization and redundancy, without the risk of a split brain scenario? We just purchased Nexus 3064-Xs and I'm trying to decide if we should use vPC or not.

Thanks in advance...