I currently have 2 Lenovo Legion Laptops. I love them. I am slowly replacing everything HP I had with Lenovo. Granted I don't get the low end machines though. Both of my laptops are the Legions. They seem to hold up as good as any dell. The only gripe I had is that I had to get a new power cord (my fault) for one of them, and it was difficult to get it ordered correctly without talking to a salesperson from Lenovo website. You can always ask at MicroCenter. They have a customer service chat and they are generally pretty honest. ( https://www.microcenter.com )

I have worked with nHibernate in the past. It can be fast if the person setting it up knows what they are doing with it, and not just tinkering. There is caching available and nHibernate can use stored procedures. I've always been on the fence as far as ORM's but at least with nHibernate, it does force you to keep the code clean. It is not going to be as fast as a highly optimized sql query, but it is fairly solid. The one thing we had to watch out for was that nHibernate was causing our resource utilization to increase on the servers it was running from, particularly memory when caching.