Finally, installed and tested the Weekender Mustang Seat. I had pass from the Stock seat to the Cross-country, again the Stock and now the Weekender. The Cross is, by far, the most comfortable and taller seat. Its tall makes even difference (for better) in the driving position, but for me (and for the beauty or our bike) is ugly because of the pillion. That is why I decided to go for the Weekender (also ugly pillion but removable) and use it as a "solo" seat. Tested for 300km, the Weekender approved the "comfort test" but is not the Cross "without the pillion". There are simnifically differences between both, specially in the height of the driving position. But, balancing Beauty versus little bit less comfort, I prefer the beauty of the overall bike with the Weekender.
Another thing: bought the rider back rest and... is hard to use it, I can't get used to it. Is like if it moves you to the front and... with the (un)existent space for the legs because of the cilinders, I would not recommend it.
Consider I am 180cm (6 feet) tall.
PS: My next modification (probably) will be the Wunderlich Handlebar Riser. Not so sure because is only 25mm (1 inch) taller, but who knows, trying to find reviews about how really improves the driving position...