GTM is absolutely right about the engineering that has gone into these wheels.
In the US, many monoblock wheels are made by cutting one forged "blank". This is not the case with the BBS FI.
Load and fatigue testing for all the individual part numbers (per application) has really allowed them to optimise weight and strength per application. This has got to be one of the highest strength to weight ratio wheels on the market.
Definitely the BBS FI, if the price tag is not a "deal-breaker". You won't regret it.