The VC is an all round much better lens than the LD Macro, in terms of optical quality (sharpness and general nice images), focusing speed (faster) and noise (quieter), build and it has Tamron's very solid vibration control system which helps in lower light situations.
The 70-300 non-VC will do in a desperate pinch and there aren't particularly great cheap options overall (though I think the Nikon 55-200 would get a more common vote. it's just not very good optically and the focusing motor is shabby at best, while the lack of VC does really hurt the lens's general purpose usage and versatility particularly on a crop sensor lens where camera movement is effectively magnified.