Can you recommend a powerful thermostatic mixer shower (high flow rate)?

Hi, I'm looking for recommendations for a thermostatic mixer shower with a normal shower head that sits on a riser rail. I don't want one of those fancy overhead rainfall shower heads. I don't think they were designed for women with long hair who don't want to wash their hair every day. 😊

The main thing is I don't want any water saving (I save water in every other way so this is a worthwhile luxury for me). I'd like to have as powerful a shower as possible. My favourite showers are the ones that make you feel like you've had a massage!

The water is coming from an attic tank and is heated by a combi boiler. There's a fairly powerful pump that boosts the supply to the bathroom.

I don't mind forking out a bit if it's a decent model.