The fact is that the P1 can hold its own in the market and do very well. It offers fantastic week-long battery life, a bright and clear display, touch interface, buttons as a backup, a comfortable band, enough sensors to keep most people happy and to top it off, it's water-resistant to 50M...
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips