I've been using the HILTI cordless platform the last few years and have been quite happy with the tools. I have:
-- Impact Driver
-- Compact Drill
-- Full sized, break-your-wrist drill
-- Rotary hammer
-- Impact wrench
-- Drywall screwdriver w/collated magazine
-- Drywall router (rotozip)
-- Recip saw
-- LED lights
-- Vacuum
-- Jobsite radio (I mostly use this for charging my phone and iPad)
-- And I'm sure a few other tools I'm forgetting
-- Mix of older 18v batteries and the newer 22v (they're cross-compatible), mostly 3.0Ah mid-sized and 5.2Ah full-sized.
Each tool is well designed and performs well. Some tools are best-in-class, the rest generally land near the top in head-to-head tests. HILTI tools are definitely no-frills, they just work. The impact driver has nice trigger action and I've never found it wanting for power. The only problem I've ever had with any of the tools was the 1/4" hex tool holder on my impact driver got locked up a few years ago, dropped it off for service and had it back in service in about 3 or 4 days. I happen to live ~20 minutes from a HILTI center, so warranty coverage is a breeze, just drop the tool off.
If HILTI didn't exist, I might look at the Metabo impact driver. It may not be best-in-class, but there are some other amazing tools in that Metabo battery platform, including their grinders, as well as the Mafell saws.