Like yourself my previous phone was a windows mobile device. I had the Samsung Omnia running windows mobile 6.1 until I upgraded it to 6.5. Before that my Medion pda was windows mobile 2003. Infact we still use it here at work all the barcode scanners run on either mobile or CEArris said:
My previous phone had Windows Mobile 6.3 and compared to even early versions of Android it was a slow cumbersome beast. Put me off even considering getting a Windows Phone when I last changed handset.