I have a Plantronics (not sure of the model number- but it is the tiny little one that I got a custom ear mould for). It was great in quite cockpits (Lears), but I've been afraid to try it in the 145. The 145 has a very noisy cockpit (wind noise) and I would highly suggest some full-size, head-crushing David Clarks. It might work with an earplug and a soft custom moulded ear piece that fits tight enough to keep out the noise, but 99 percent of the pilots I know in 145s use the big head clamps.