i have 2011 135I with the M package.
I love it
The power is great, the double clutch with the sport mode is nuts.
After 2 months of driving I still have that stupid smille on my face.
I'm actually thinkind to sell the Ducati and just drive the car this summer.
I'm not a expert with the BMW products, However that car is just too much fun.
I dont know about long trip, but i will assume that the confort level should be semilar to my previous 2009 328IS.