You might try the simple questions, simple answers thread - where this question has been answered already, within the last couple posts of the thread. The search function would have drummed this up for you as well. Or Google.
Pretty simple question, but are there any haste break points that are well known already? Such as which are easiest to achieve and stick w/ until higher geared, but then what those would be after. Any input would be awesome, thnx.