Lanefan
Victoria Rules
Where I don't mind a system that allows low-level monsters to be a threat longer into the campaign, and on the flip side might allow some lucky PCs to bring down something well outside their normal pay grade on the odd occasion. 3e was about the opposite of this.Having played at least that many editions, my preference is for the mathematical regularity of 4E. A high-level PC should face minimal threat from a low-level monster, and vice versa.