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Tilting the radiator back would be a positive point, in my opinion, as it allows the intake to catch air from in front of the radiator as well as over the top - and considering there isn't a great deal of room over the top in the VEs, it makes sense to access all the air possible. Only really one extra step in the install. VCM intake comes with the brackets to remount the radiator.
To be honest, I don't think there's a great deal of difference in results between any of the well-designed OTRs, particularly without tuning. The main reason why I like the VCM is for its design vs its price.
yeah there's not a lot in it. VCM goes for $545 for the MAF version and $575 for MAFless. I think the majority of OTRs are around that price, except for the Dus which is more, mainly due to the way it's finished.
The OE intake is just another great example of penny-pinching by holden. Plain and simple. Same with the brakes and suspension.