HTC HD2 should come with Windows Phone 7 when it launched. HTC HD2 hardware is capable to run WP7. However, Microsoft did not manage to hit the WP7 schedule, so HTC HD2 was shipped with Windows Mobile 6.5 instead. And Microsoft rejected to upgrade HTC HD2 to WP7 officially. Luckily, thanks to all the brilliant developers. We can have WP7 on our lovely HTC HD2 now. Here are the top 3 WP7 ROM that I tried…