IMHO no comparison
4 years F/O MD-11 followed (some time later) by 13 years captain B744
I miss the look, feel, and quiet of the MD-11 cockpit
I do not miss the clumsy FMS transactions or inadequate crew rest facility
As for LSAS when a manual landing in gusting or cross winds is required - be as careful and wary as you would in the company of a mistress (or wife lol) who you just gave some bad news
I always said the MD-11 rewarded a smooth and competent pilot, but could hurt you if you were having a bad day
Not so the B744
If one could ascribe personality traits to a huge chunk of steel and aluminum, I would describe the machine as being much like your favorite golden retriever dog
It is obedient and happily does what you tell it to do
It tolerates your foibles and is - usually - very forgiving of your errors
If it does not like what you are doing, it will let you know well in advance before issuing a low growl or a small bite
Despite the good heart, it has - as mentioned above - a limited brain that occasionally needs time to think before responding to multiple commands
All in all, a trusting and trustworthy companion
After so many years, I find the most difficult part of flying the B744 to be the number of time zones in a month, and the inexperienced F/Os (as little as 2 years total time) that bear watching
The airplane itself is a piece of cake
One last thought - another type rating on your resume never hurts
Lots of contracts out there for B744 crew members too
Unless the move would significantly and adversely affect your present quality of life - or your colleagues on the B744 are complaining loudly about their monthly rosters - I would recommend a 'yea' to training
Good luck