Hi, never used a P1, but I would recommend you look at a Sonik NCT to meet your requirements.
They are made from nano carbon and are super light and strong, with excellent bite detection. Ideal in my opinion for flatties.
Frazers in Gateshead are selling them at £170, originally £279.
If you want to try one, pm me I am sure we can arrange a test.
PS I am not selling it, lol