In recent years I use either my Jetboil Minimo or MSR Reactor.
There are pros and cons to both.
I long ago gave away to a friend my dirty, fussy, problematic MSR Whisperlite International. (My friend is still using it. He loves to tinker.)
For me the efficiency, speed, and ease of use make it worth extra weight and space.
related – MSR – 5 REASONS YOUR BACKCOUNTRY STOVE SHOULD BE A STOVE SYSTEM