Superformance MKIII vs Shelby CSX.....2016

[E5USMC]

I'm new here and in no way want to start a flame war about either car but any info will be helpful and appreciated.

I did a diligent search and while there was some threads dealing with this topic nothing was really recent not sure what's changed in the last few years. I'm to the point of ordering a SPF and having a Southern Automotive 427 installed by Pathfinder Motorsports in FL or biting the bullet ( and wallet) and going with a new CSX 6000 roller with same motor

From what I've read the main differences between the CSX and SPF are

1. CSX has round tube chassis and SPF has a square tube...both 4"
2. Radiator angle
3. Manual breaks vs power brakes
4. Rear end
5. CSX has more structure support under hood area
6. CSX has brake scoops on all 4 tires

Are there any other major/minor differences between the 2 cars? Is the real difference in price (40k) the extra quality or manufacturing differences or is it the Shelby heritage and the cars ability to appreciate in value? It seems they are both GREAT cars!!! I know we probably shouldn't buy a car like this and expect it to appreciate or be an investment but from what I've read and the prices I've seen the CSX4000/6000 cars have continually increased in value so that's an appealing quality. I'm just wondering if it's 40k spent wisely. I'm no overly rich man so just wanting to spend my money wisely.

Thank you for any info and guidance
Kenny