This week's book giveaway is in the Mac OS forum. We're giving away four copies of a choice of "Take Control of Upgrading to Yosemite" or "Take Control of Automating Your Mac" and have Joe Kissell on-line! See this thread for details.
Choosing right one for you depends on the requirements you have, for example if you are looking for high number of concurrent visitors and have requirement for High scalability and performance, Data management and Enterprise document integration such as PDF etc then LCDS would be the ideal choice otherwise BlazeDS.
Please refer comparison chart for making your choice.