Agree with WWW on this one.
To be honest dont really care what the sim looks like inside as long as it has all the requisites. Where it does come into its own, as WWW says, is getting your scan, checklist and general cockpit procedures spot on in a controlled environment and more importantly MUCH CHEAPER!!!
No point learning procedures in the air and spening all that hard earned money cocking it up! Wait until you are happy with what you have to do and the principle of how to achieve it on the ground and then go and do it for real.
The other beauty of sims is you can plot out what you have been doing (can be very embarressing sometimes!) and also if you do get confused you can pause it (NB : This does not wotk in real aircraft
)
Julian.