if u r a fanboy of boomy bass, then pl 11 is a very good option..its much better than ep 630,,if u want a tighter bass and exciting sound, then go for the mee elctronics...m6 ....my personal favourite...very good for the budget...i guess its 1.3k...huge difference from pl 21....and sounds more fun....i own both and prefer the m6 anyday !