Magoo, let me ask you this, what you think to see 25% plus of the airforce be the F-18E/F rather an F-35 because the project is behind ? The F-18E/F does have some good qualities for sure, and its no lemon at all, lets face it its the plane of choise for the USN ( the worlds 4th largest airforce).
My point was also, long term training and logistical costs would be reduced with one plane which would help to off set the high up front costs of F-35A
Dr P
Scroll back through this, the F-35 vs F-22 and the F-111 2020 threads, and you'll see this has been answered before in detail.
However, in brief, I don't believe we should place all our eggs in one basket. I believe a two-tiered combat force (and NOT necessarily one tier more capable than the other) provides inherent flexibility that a single type cannot provide. Sure, it might be cheaper to operate a single type...until that type has to be grounded for any significant period of time due to a design or maintenance issue. Plus, these days air forces don't stock-pile huge warehouses full of spare parts 'in case' they are needed. If a jet breaks, it will transmit exactly what's wrong back to its home base before it lands, the flight line engineers will have a new part ordered online, and it will arrive via FedEx within 24 to 48-hours. Only commonly used or really high value spares (e.g engines) will be kept as spares.
I have a lot of time for the Super Hornet's capabilities. Although I would agree with Occum that it is not a ball-tearing dogfighter, it's radar, its integrated sensors, its datalinking ability and potential, its advanced cockpit displays and avionics, its growth potential and its weapons spread are pretty impressive, and there's more to come. Many of these systems while, not being the equivalent of those in the 5th generation jets, are more advanced than anything we have now and thus would provide the RAAF with a flatter learning curve before the 5th gen arrives.
The RAAF is already familiar with the Hornet. Although the jets only share 25% of their parts (I thought it was less actually), they are essentially cast from the same mould and therefore engineers will essentially be familiar with how the thing comes together. Aircrews will also be comfortable jumping from the Classic into the Super (Boeing says it takes 5 rides to convert from Classic to Super, "which is 4 more than necessary!"). The RAAF already has support agreements and infrastructure in place with the USN and with Boeing, and these can easily be rolled over to the Super.
I do, however, have one problem with the Super buy. If it goes ahead which is highly probable, it means the any chance of an F-22 acquisition will likely be gone due to the timing. If we want to get into F-22s, time is running out and we need to start making the right noises in Washington very soon to make that happen. USAF production, if it stays at 183, is currently scheduled to run dry in 2010, so we would need to have placed an order by I would guess early 2008 at the very latest for deliveries to start from 2011, just a year or two after the Supers start arriving. The RAAF is not going to have the "head space" nor the resources to induct two new combat types in such a short period of time. In fact, I'd be interested in Occum's opinion on this.
Cheers
Magoo