There are now 3 planets that offer daily quests: Belsavis, Corellia, and Ilum.
To start, you SHOULD get the mods to enhance your current orange gear and weapons. The cost generally sits between 4-8 daily commendations each. Please note that the armoring and enhancement mods, as rewards for certain Heroic difficulty missions so focus on the modifications first. Over the course of 5 days, all of your major parts should be outfitted and ready for Black Talon HM.
By now, I'm pretty sure you've browsed the shop and saw they had the ear pieces and implants for sale. Save your commendations and get the ones that fit your role the best. Those should take no more than 4 days (at the cost of 120) a piece, then go for those relics (cost 200) that take about 7 -8 (counting leftovers) a piece. After ALL that, they have some sweet looking mounts for sale if you're a collector.