I have tried them both on my tv in my bedroom a PC I built for the bedroom I sold I used the HDMI input, and now I got my laptop, cheapo, to the VGA, and thought it was gonna suck, but it looks just as good as the HDMI did running at 1280x720, so really its up to you and what your going to be doing with it.
My only problem is I cant get my laptop and tv to produce a correct 1024x768 image on my set without it being all messed up, other then that it will do pretty much most of the usual res without corruption through the VGA. Using HDMI though I had ZERO res problems at all on ALL res upto 1920x1080 though, but this laptop doesnt have that much power to go much further then 1280x768 if Im lucky to even get anything to run at that as well anyway, let alone anything higher.