Its possibly more about what you do in the mixing stage.

VSTs like PSPs vintige warmer,BBEs Sonic maximiser and I love the Nomad factory Bluetubes compressers,EQs and limiters and the Waves EQs are very nice as is the Waves Ultramaximiser.

Compression can deffo help to acchive a "chunkyier" sound but as I said its more about the mix than the mastering proccess(alltho mastering is a huge help)
Alot depends on the Plugginns that you use as cheep and free ones more often than not sound cheep or free and expensive ones have a habbit of sounding good.