I was in the same situation. I own my business and I answer 99% of my emails on the phone. I was trying to decide between the Bold 9650 and the Evo/Evo Shift. A few things that helped me make up my mind were that if you read what everybody says makes Android "better" than the Blackberry they had, they mention things like Flash, Facebook apps, and other stuff that would fit more into the "toy" category than the serious business category. Also, if you have your email setup with your company domain name, you'll be missing out on some features unless you try to find another email app. Forwarding your email to a gmail account won't look very professional so that wasn't an option. If you have to receive meeting invitations, you might want to make sure you will be able to handle it on the Shift. I couldn't find a definite answer but it seems like it can't. I get my emails on my phone within seconds after it reaches my inbox. I also heard that email apps like K-9 can be setup to "push" your email but think about it. How can the device that is receiving the email "push" anything? It has to have some kind of constant connection to the server in order to see the emails. Blackberries don't. Don't get me wrong. I do like Android phones. That's why I'm still here. I have until the end of the month before my 30 days are up and I would REALLY like to get an Evo Shift but I'm just afraid I won't be able to run my business with it. I look at a lot of the apps and they look kind of well, toyish, amateurish, hokey...I don't know how to explain it. Just not something that would run on a serious business phone. If you're into Twitter, Facebook, Myspace, Music, youtube videos, etc., then yes, an Android phone or even an iPhone will blow away a Blackberry and no one can deny that. But not of those things are serious business tasks.
Since you're in sales, you're basically in business for yourself (I assume you work on commission). So, you have to make a decision what is more important to you. No one can beat an Android/iPhone on social media, multimedia, etc. because that's what they were made for. No one can beat a Blackberry for email and getting business tasks done because that's what they were made for. I don't know if you know this, but if you disable dialing from the home screen on a Blackberry, you will enable shortcut keys. So, from the home screen, if you want to get to your calendar, you just hit "L". If you want to see the Monthly view, you hit "M". If you wnat to see your tasks, you hit "T". For Notes, hit "D". Want to send a text or email, hit "C" for compose, select your contact and type away. What can be faster than that. There are many shortcuts on Blackberries that make things just a few clicks away and you can get stuff done fast.
I still want an Android phone so I totally understand. You just have to prioritize your needs. Having something that's "cool" won't make you money and may even cost you money. If you ALREADY use several Google services, then an Android may be best for you. Just prioritize and then research and see which phone is better at the things you NEED. The best solution of course would be to have a Blackberry for business and an Android for personal. But that's tough on the wallet.
I hope that helps.
Richard