Hi leesnet, - Rightedge costs $500 and WL5 $8xx (plus $150 yearly fee). But RightEdge upgrades cost $. - WL community is significantly larger. Rightedge forum has moderators answering your questions all the time. - At this moment, WL is not a complete package (no support for data access/auto trading interface to IB, MB and other brokerages), it can be used for backtesting only. Rightedge supports IB and some other brokerages. - Performance wise, both of them uses .net. So speed should be decent, but I haven't test them thoroughly.