hey oldmanjenkins welcome to the forum!
well first things WM and WP are completely different systems , take every thing you know in WM and trow it out the window! ( no pun intended lol ) dont get me wrong its still the same great experience! and BETTER!
if your on GS2 , i think you will love the Samsung Focus S ( they have very similar build )
again its hard for me to say witch phone is better for you with out knowing what you use your phone for but here i go.
BB:
- if you wana use BBM.
- if you want the BEST E-mail experience
- simple black on white device ( might get boring for you , coming from android )
- best security system ( good for work e-mails and other privacy)
WP:
- if you have an Xbox i suggest it!
- more interactive then BB
- Bing
( if you like it , i personalty like it more then Google/maps)
- innovative ( live tiles are great for in and out when your in a hurry )
- also very good with privacy , we are safe from all the malware!!
if you check out the link in my signature: then go to
Metro UI section , you can test the Metro UI on your android to get a better feel for it