Hansgrohe (and comparable brands) & their retailers

[shoebox239 0]

I am a renovation novice and trying to get up to speed in this area ... hope you guys can help

I wish to install a rain shower system in my bathrooms (a combined mixer system that does not need hacking of the wall). I understand Hansgrohe and Grohe are the top brands. May i know besides these two, are there any other brands in their league, or else reasonably good but maybe less expensive?

May I know who are the competitively priced retailers for me to source for these items?

Also, would these items by any chance be cheaper in JB if available there (and if so, any particular retailer?)?

Many thanks in advance.