I'm not sure why the Mossie vs Blenheim argument rumbles on, the Blenheim was highly vulnerable and suffered heavy losses, while the Mossie was the opposite in both respects on the same types of mission. Martin Bowman's Reich Intruders is a great place to start to get an airman's perspective of the difference between the two types.
I used them as an example. It's not about the 2 planes but if my way of making an unbiased decision is doable.