I have just recently bought an mmmbop, finished building it weds so it's had one 2hr ride round my local trails.
If I'm honest I was expecting it to be really harsh (I haven't ridden a aluminium hard tail for 5 year+) and was surprised it wasn't at all in my opinion.
I would have thought they would ride exactly the same up/down given they have the same geometry, just the 'feel' would be different – if that makes sense? My defining reason for going with the mmmbop is it is quite a bit lighter than the blue pig and it was replacing a bike that whilst a lot of fun, I've got sick of lugging around at 35lb. The idea was to try to build it up to a similar weight to my charge duster (25lb), my build which is quite robust comes in at around 26-27lb so pretty chuffed.
I'm not sure with it at the moment, one ride isn't enough to give it justice. One thing for definite is that I'm not happy with a 50mm stem and 685mm bars…needs to be run with wider, I'm thinking burgtec RW's (like my susser).
Need to get to afan to try it out properly.