To want some glasses that don't have arms with bows/flowers/leopard print or similar

[crikey81]

I must be unreasonable because it seems next to impossible to avoid. I'd go for styles for men which don't seem to feel the need to add crappy decoration but stupid narrow face means they don't fit.

For something you're wearing everyday I'd thought that most people want something fairly neutral, or do people coordinate glasses and oufits these days?

I've got Lindbergh frameless ones. Lovely range of colours and loads of shapes. Not a pattern in sight

I was told to avoid rimless with my prescription (-5.5/-6) but don't know how true that is. Any opticians about to confirm?

I find Specsavers to be very much like you describe. Another recommendation for Glasses Direct - super cheap and a good range.