I am a DIYer and couldn't see myself handing over 50 to 80 bux for something I can do in 15 minutes. However not everyone is a DIYer obviously. There are good and bad mechanics everywhere. Lexus has them both and the little mom and pop shops have them. Find a reputable mechanic with a company that will warranty their work. Pretty much common sense. In the summer months I won't touch my car b/c its too hot, so I go to jiffly lube for oil changes and I bring my syn oil. I also watch the entire process, because you never know what you might find them doing or not doing. For warranty work I would definately go to Lexus, but I will find out who is working on my car and personally speak to him. If I have a bad vibe for whatever reason for example he seems to be rushing me along or something I will let management know or possibly get my car to another dealership. Speaking to other mechanics to find out if a particular mechanic is something I do also. If I find that it is hard for the mechanics to edify the one in question that is pretty much a sign that he does a rush job. And that has personally worked for me in the past.