Bends and drop ends. Multiple forearm options. Flat bars have nothing to rest on, unless you set up bar ends to do so.
No bar ends for me, I don't like the wide stance or increased reach. I cut my bars down to 670mm and even that is too wide. I would prefer more sweep, but the TICR internal routing of the Most bars is non-negotiable. I would have to have any replacement milled for the openings.
Here's my bars, good sweep and much narrower then the stock bars. Tried inner bars at one stage using cast off hoods (removed levers) but wasn't using them much as position felt too stretched out. Think the Ergon grips are GP1s can't remember. This set up is by no means aero but it is extremely comfortable. The carbon fibre AI designed S Works mirror was crazy expensive but with it's built in radar & connect to Starlink is very handy
But if you give me the nod I'm sure I can get you an equally beautiful mirror for a very reasonable price...
Re sweep, tried a couple of different options and just liked this one most. Suits the twisty narrow lanes here where aero is not important so my more upright position isn't a problem. I do in strong headwinds use the parts of bar by the stem and tuck down out of the wind, but obviously this is not half as versatile as drops.