The sportier Corvette models are very good cars, they are built very badly though. Using Top Gear as a source for a serious assessment of a car is silly, particularly getting Clarkson's opinion on the 'handling' by doing a few uncontrolled powerslides on an airfield.
The video you should have linked to is this, genuinely impressive, but not the soft commonly seen variant.
The Elise and the 911 are the only decent sportscars on that list, because like the Corvette they compromise luxury to stick to their goal of being very capable sportscars. The other 3 are all pretty dull and weigh far too much, and to add insult to injury won't even let you drive the car. If you ever saw the amount of crap that came out of an M3 road car (even a CSL) you'd soon understand why in standard form it really can't be described as anything other than what it is: an overweight, but very well setup and balanced, coupe that doesn't make compromises for performance.
Now here is where you don't have a clue what you're talking about. North America has some of the best race tracks in the world, mainy far better than typical European tracks (especially Ireland's offering). To name a few at the top of my head:
Lime Rock Park
Laguna Seca
Mid Ohio
Mosport
Riverside (disused)
Virginia
Road America
Road Atlanta
St Jovite (Mount Tremblant)
Watkins Glen
Sears Point
Sebring
If half of those circuits were in Europe they would probably be considered on a similar level to Spa, because they're American you probably haven't heard of them or have immediately dismissed them, of course none of them are a touch on Mondello Park