Options on Driveshaft Problems

I am in the process of buying an 8" Rock Krawler Kit form RC and it says "[FONT=Arial, Helvetica, sans-serif]Requires a transfer case drop kit, or a C.V. Driveshaft Conversion, or a SYE with C.V. Driveshaft Conversion" Which i smy best option for less breakage and should I buy this from them or elsewhere. Thanks

James
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SYE with CV driveshaft would be my choice

Would you recommend me buying this from them at the same time or from somewhere else. Or I guess what I should ask is are they good quality or should I buy something that is a little better for a little more money or something comperable for a lesser price?

performanceoffroadcenter.com for the SYE