I know Mongoct has recommended Symmons brand. It is a brand that is used in institutions and is reliable.

Here is a link that might be useful: Symmons Tub/Shower Systems.

I think I'd consider a "handheld" that is attached at the typical fixed location. Something like this (see link)
It won't sag.

Here is a link that might be useful: one option

We have used the Hansgrohe Raindance handheld shower head on the 36" Unica wallbar as the only shower head in 3 bathrooms now. We had no problems with sag or anything else using it in our last master bath for 8 years. It has great water pressure, and I love being able to easily adjust the height of the shower head for different users. I can slide the head down the bar for showering little kids or tilt the head back in that low position to massage my lower back if it hurts. We paired it with a tub spout in the kids' bath.

The S head works well with modern or contemporary decor and the E head with transitional or traditional. Hansgrohe offers other wallbar styles also, but the Unica has the best range of motion to tilt the head up and down or side to side.

Here is a link that might be useful: Raindance wallbar