I don't think Ord Mantell or Corusant had bonus quests that we could do. Taris did, but its bonus quests were within the levels of the planet so if you were thorough you probably picked them up.
I use this site's database to check there are any quests I've missed:
http://db.darthhater.com/quests/?fil...3#quests:0+2+1
Scroll up on that page and change the planet to what you want. It's not 100% accurate in terms of quest rewards, but it's better than nothing.
I'm not quite feeling the pinch in leveling...so far I've been showing up to each new planet at least 2+ levels ahead. You're ahead of me so you're going to have to report back if there's not enough quest xp on the later planets. Though I'm thinking pinch in levels is likely playstyle dependent. I don't skip quests. I'm pretty patient about finding groups and making them if need be. I go for the datacrons relevant to my character as well. My commando is a scavenger/slicer, and so I have this compulsion to crack open every single lootbox and must harvest every single node. If there are mobs in my way, they're going to be aoe'd into oblivion.
It's fun to play a commando and throw some aoe around. I'm hoping how I'm playing will be enough to get my character to 50 without too much trouble.
I am new to the game, but this isn't my first mmo. Played WoW for about 6 years...not sure if I should be admitting that lol. I've also played LOTRO, GW2. And currently bouncing between this game and The Secret World.