We frequently get ask for performance benchmarks on our forums. We typically try to avoid this as performance metrics from the company who is producing the product are dubious at best. We have been looking over ormbattle.net's performance metrics for a while now and we feel they are pretty fair comparison amongst the top .net ORM's. The results should be live pretty soon, however if you want a detailed break down of the EntitySpaces results head on over to our blog and check them out. As you can see EntitySpaces is very fast already and we will be continuing to optimize the areas where we are not at the top of the stack.