For anyone that's been watching the usual suspects over the last week, you've probably seen the fuss caused by ORMBattle.Net. I won't go over all the details here (just google it, or head to Ayende's blog), but in summary the authors of ORMBattle are themselves ORM vendors, and they appear to have set out with an agenda of making the competition look abysmal via a set of ill-thought-out benchmarks. In doing so, they have upset a number of influential and trusted figures within the .Net community, people who have dedicated significant amounts of their personal time to the community.
Contrast this with Frans Bouma. He also has an ORM tool (LLBLGen Pro, for those that live in caves). It's also a commercial offering. What does he do with regard to the Linq to NHibernate project that I'm working on? Does he diss it? Does he claim that we (the NH team) can't deliver and that his will always be better? No. He actively offers hints and tips, and today offered that I can email him direct with any problems that I encounter. Quite a contrast, I'd say, and many thanks to Frans for his offer.
So, who would you choose your ORM tool from? The thing that's likely going to be at the core of your application and hence possibly quite hard to swap? The answer is, of course, entirely up to you. Me, I'd go for the one where I trust the supplier, and where I feel that they will work and advise in my best interests, not there's. And out of the numerous options, the authors of ORMBattle.Net are, quite definitely, not in that group.