Hi there,
Here's a resource that may help you to get an idea about different types of CRM and opinions on them, etc. Click the link and it will lead you to the blog that contains the white paper download --> CRM Software Survey on Usage and Experience.
Enjoy! 
I've got to say that Salesforce.com is really, really good and VERY flexible if you choose to leverage the environment for other simple apps. They also have become the big dog in this space, so they're building a certain amount of momentum, and of course have more resources to work with.
I just asked a similar question!
This was my post:
http://www.startupnation.com/business-forum/#topic/Best-CRM-software-for-my-business-
Jeff and alabern, could you tell me, are the CRM software that each of you use good for automating the sales process the way I described in my thread? Is that how you use it?
Kregg, what about AppShore? Is it a good product for my needs?
usmansheikh, Cost effectiveness is very important to me, but so is automating my process so that none of my leads or potential customers or current customers slip through the cracks. Is HighriseHQ.com a good product for that?
NSKincIT, Thank you for the link. I have downloaded it. It was useful knowing that such a high percentage of CRM users are dissatisfied with their CRM, and that nearly 50% have switched in the previous year. That makes it clear that choosing the right one is even more important. I wish that it specified which product the most customers liked the most and which ones they didn't, or if the dissatisfaction rate was similar regardless which CRM they were using. Of course, the usefulness of any system probably differs depending on what kind of business a company is in.