The interpretation that they are in some way dodgy is yours, not mine. I don't think McDonalds are 'dodgy'. I've chosen not to eat there in the past 5 years or more. I'd bet that I haven't been sober in a McD's for the past 10 years. Specsavers are what they are - a high street chain with a heavy emphasis on advertising and 'special offers' to bring customers in the door. If the 18% staff turnover that they experience in the UK is replicated here, your chances of building up a relationship with an optician who can get to know your eyes and your preferences are slim to none. That's not what I look for from a healthcare professional. If they meet your requirements or those of other posters, best of luck with that.