Another vote for HP. Went off 'em 15 years ago when their software started trying to take over the world (pace Nortons & others..) but I now have a HP MFP M277dw, which prints double-sided, scans, etc and has a very useable software pack bundled with it.
Never a problem of it dropping off the wireless net - only it does seem to switch itself off from sleep about once a month or so, but it re-connects no bovver which switched on again.
Non-OEM toner carts make the running cost bearable, too, unlike my Canon inkjet which seems to empty half a cartridge every time I switch it on...