A method of designing a bottom hole assembly containing a drill bit.

A drill bit 10 has a plurality of cutter elements mounted thereto which comprises one or more first cutter elements 40 and one or more second cutter elements 50 attached to the body 12. The second cutter elements differ from the first cutter element in at least one cutter element property. The first cutter clement has a diamond body containing a first region comprising an infiltrant material disposed within the interstitial regions. The first region is located remote from the working surface of the diamond body. The first cutter element also contains a second region comprising interstitial regions that are substantially free of the infiltrant material. The second region is located along at least the working surface of the diamond body. The cutter elements are positioned on a surface of the bit body based on the drill bit properties and cutter element properties.