I was recently working with a customer around the initiation of a new project and we had to make a decision about wether we should choose BizTalk 2010 or BizTalk 2013 for this project.
Obviously being a keen techy I was actively encouraging the choice of BizTalk 2013 but as any responsible architect knows its important to follow a structured decision making process to evaluate the pro's and con's of the different options and make a sensible decision for your organisation and to also have justification for that decision.
We use a lightweight architecture decision framework loosly based on the excellent Applied Architectures on the Microsoft Platform books framework.
The powerpoint slides on the link below shows you some of the things we considered when we made that decision which might help you.
Id love to hear any thoughts from people on this approach good or bad