For masonry we have Milwaukee, Bosch and Hilti cordless hammer drills on sites. For drilling steel and wood I've used a variety of Makita, Hilti, Milwaukee, DeWalt.
For breaking, there are labourers and, better still, corers
For hammer I much prefer the Hiltis TE2, TE5 TE6. A bit less vibration, noise and better balanced.
Can be pretty sure someone has a Hilti on site and it saves carting in the battery charger. However since they are pretty standard issue a disadvantage is that batteries tend to get stolen (even if using one's own charger) by other crews. Hilti have an outlet here so there is good back up if they go wrong. They also let you test out the machines before buying in their showroom, in lumps of concrete they have for demo purposes.
Milwaukee used be be Kango didn't it? Kango were the market leader in breakers, when I was a lad and this was all fields.
For a day to day battery drill (wood, steel and optionally occasional brick), I've used Makita, Hilti and Milwaukee and prefer Makita. Something like the LXT 18V BHP454 is pretty comprehensive. I've got one without hammer and one with hammer. I don't take the one with hammer on site lest someone uses it to attempt to drill concrete. It's handy for carpentry at home and fixing to brick walls withouy getting out the heavy artillery.
As with all cordless drills with hammer, the hammer action is noisy, much of the vibration energy is transferred to the user. They won't handle concrete and excessive use of the hammer facility shortens the life of the planetary gearing.
I was doing local authority void property housing repairs ON FOOT (though contract was for inspection and test only) so was carrying test kit, tools, drill, materials and paperwork around with me so it was pretty handy to have a machine that delivered sufficient torque and hammer in one light weight unit.
If much of he work is driving screws then less is more. I've had sufficient torque and battery life (at least a full shift) out of a 7.2V cordless driver, without putting my shoulder out with the unecessary weight of carrying and using a full battery drill. I'd a Dewalt DW920K-2 cordless driver but it was stolen. Makita do a DF010DSE.
I was after a Milwaukee 18V battery with hammer, I saw it in a catalogue and it ticked all the boxes 18V ...check, hammer...check, Li-on...check. When someone took one onto a site I had a go of it and decided it wasn't all I'd cracked it up to be and decided to stick with Makita.
If I'd the money I'd have a Hilti for hammer (and run the battery outboard to reduce strain injuries), a 18V Makita LXT (no hammer) for drilling and a 7.2 cordless driver. Nah, scrub that someone else can buy the hammer and they can do all he messy dusty overhead drilling and I'd keep my money and use it to go on some courses and get a decent clean job haha.
Ultimately, the tools are for you, it's your money and your decision... I'm just sharing my experience.