I have had tremendous help from SemperFi.
He has helped me with two upgrades, ensuring my mods were kept in, helping me to install new mods, and generally helping me with lots of questions and issues with my shop.
He is truly extraordinary - takes time out to answer anything, stays in touch regularly (really - nearly instantly over email!!!!!). He goes beyond the minimum services - let's you know if there is anything else that needs done with the shop (in my case helping out with some odd scripts), and in my opinion, that means that he cares about his customers and always shows professionalism and integrity in his work.
I really can't recommend him highly enough. I will be happy to be a reference at any time.