Aggregate 48+ 10Gb services with one or more 100G uplinks

In your opinion, what would be the best vendor/device to aggregate these many 10G services with at least two 100G uplinks?.

We are trying to avoid making our PEs (MX480) part of the aggregation layer (one option was to add 10G boards to our current MX480 and bring all 10G straight to them) and instead use a single layer 2 device connected via 100G to our main and backup PEs

Our current plan would be to upgrade our MX480 to support 100G and connect one (or more) Ciena 5171 so we can aggregate many 10G on it and keep it layer 2 from CPE->AGG->PE

I want to know if there is anything else out there around the same price (under 35k), or if our solution was the wrong one to start with.