SIDI Boots

After a new pair of SIDI boots as my current Vertigo ones are just about falling apart at the seams, but have been the best pair of boots I have used in 26 years, as far as comfort goes.
So the question is do I get the same? I don't think I am interested in the 2 more expensive ones but as a cheaper alternative has anyone tried the B2's? any feedback?
The choice is between:
Sidi B2 Boots $400
Sidi Vertigo Boots (currently use) $549
Sidi Vertigo Corsa Boots $679
Sidi Vortice Boots $699.... how many gadgets & adjustments can you have on a boot
Nb these prices are not discounted just a RRP guide
So the question is do I get the same? I don't think I am interested in the 2 more expensive ones but as a cheaper alternative has anyone tried the B2's? any feedback?
The choice is between:
Sidi B2 Boots $400
Sidi Vertigo Boots (currently use) $549
Sidi Vertigo Corsa Boots $679
Sidi Vortice Boots $699.... how many gadgets & adjustments can you have on a boot

Nb these prices are not discounted just a RRP guide