I consider the old Iron Barrel Bullets to be a different motorcycle entirely than the new UCE bikes.
I could very easily desire a UCE as another bike for my stable.
However, I don't view them as a "replacement" for the Iron Barrel Bullet. The old Bullet stands alone as an icon, and can never be "replaced".
The new bikes bring something more to the table, than the older Bullets had, and they also leave something behind.
So, it's a matter of what your desires are.
I could add one to my stable some day, but I'm not selling my old Bullet to get one.
That picture you posted is a great looking Iron Barrel Deluxe in red. I can certainly understand your attraction to that. The newer bikes will never match the eye appeal of that bike. But, the new UCE will cruise the highway at speed, and look great in their own way.
Your call.