I've never had any experience with an X300 but have had a TLR1 for about 4 years. It's a great light and I like it but no where in the greater Sacramento area fixes them. I was removing my gun from holster (kydex) and the battery cap switch broke. It's made out of plastic and where the clip is to lock the cap on broke. I haven't beat on it in anyway. I took it to Sacramento uniforms, that's who Steamlight said would be able to fix it. Sac uniforms said they couldn't and had to send it back to Streamlight, took me about 3 months to get it back. They did not charge me to fix it.