It really comes down to what you want.
The only thing I can add is that your buying habits are - as with us all - determined by background, exposure to comics, socio-economics etc. For example, I collect and read e-comic versions of classic tried and true runs, and will only bother with Moderns if the consensus is overwhelmly positive. The physical copies I own are all investment items from the Silver and Bronze Age. So, I straddle both worlds as a collector and investor. That, however, may not be right for you.
If you would like some investment advice many here could help.