Have you considered using the TPC-H test in Benchmark Factory with SQL Server to test Read Intensive drives?
Also, the fact that the Toshiba RI drive did well in an OLTP test doesn't really tell us anything besides the fact that it can do well in workloads it's not designed for. Car & Driver doesn't test sports cars' ability to tow a boat. And if they did, and one sports car stood out as having good towing ability, we wouldn't think that makes it a better sports car. Right?
Try out TPC-H, should be pretty easy to add it to your process if you're already doing SQL Server and Benchmark Factory.