How to map old Ensembl Gene IDs to HGNC symbols and Entrez IDs

I have a list of Ensembl version 74 gene IDs that I need to convert to HGNC symbols. I was wondering what the best way to go about this would be? Originally I used biomaRt with Ensembl 75 (74 wasn’t available) to perform the mapping, however, several of the symbols in the produced mapping were no longer the official HGNC symbols for the genes but aliases. I was wondering if I should use the current version of Ensembl instead, or maybe use both (current version for IDs that are still in that version, 75 for those that aren’t)? Also, if I wanted to convert the Ensembl IDs to Entrez IDs, what would be the best way to do it?