PD actually did adjust the lineset for the larger Pulses (and somewhat recently just did the same for the smaller ones) to address the flare. It's possible a decent chunk of that negative opinion was from the old configuration.
http://www.performancedesigns.com/docs/Large_Pulse_Upgrade_Notice%202012.pdf
http://www.performancedesigns.com/docs/Pulse_120_170_Landing_Performance_Upgrade.pdf