Skullcandy earbuds (not the cheaper inked series.) They sound great and have a volume slider built into the chord. I have had mine for three years. Best 45 bucks I have spent in electronics.
I second the Klipsch. Been buying their speakers for years. In-ear Headset is great sound.
For bluetooth, I also use the Motorola S9HD. Those are very good sound for my listening, not so good for people I'm talking to - and I often knock the rubber earpieces off and have had to order new ones for losing them. The controls are easy to use and remember. I would get them again, though, because I have worn them for over eight hours without discomfort and they're now cheaper. IF you wear glasses, they don't sit on the stems of glasses very well.
I have some NuForce NE-700M in-ear monitors. The bass on them strikes me as probably stronger than reference, but they sound absolutely fantastic. The bass is well represented and I can hear things much lower in all of my songs than I've ever heard before. Everything else about them has matched or exceeded my expectations. I wouldn't say I'm an audiophile, but I think these are really good. Easily the best sound quality I've heard.
I also hear that their lower-end in-ear monitors are really good, but I don't have personal experience.
I use beats. they are pretty sweet when i use them with my ipod or laptop, but with the bolt i usually listen to podcasts not music so i guess it doesn't make a huge difference.
Another vote for Klipsch. I use their Image S4 earbuds. Comfortable with deeper bases than I've ever found with any other sub-$100 earbuds, and even outperforms most of those
I use Shure SE 530 earbuds. They are about as good as it gets but they are pretty pricey at $500. Shure also makes cheaper models of those earbuds. Its going to depend on what you mean by "good" and how much you have to spend. I also like Klipsch products. When Paul Klipsch owned the company they put out outstanding products.
If you really want the best I would take a look at those two brands and go with the best that you can afford.