I agree that the Zentorno is an ugly POS. Even the Veneno is cringeworthy IMO. I don't get why most Online players bought that monstrosity of a car. Felt like a cheap knockoff of the Sesto Elemento, rather than a uniquely designed copy. I do however appreciate the Osiris and the T20. Both cars are sublime and fantastic to drive. Rockstar really nailed it with those. No wonder I grinded to the death to get both cars.
Most of GTA V's supercars look like oversized Hotwheels cars IMO. Do I need to mention that hideous Zentorno thing? *shudders*
Speaking of supercars I love racing in GTA IV's Infernus. It has such great grip/chassis balance it feels like it's on rails.
Maybe it's just my taste in cars. Supercars in general don't do much for me. I'm more into muscle cars and classics. I would rather drive a rusty Tornado in GTA V than the hideous Zentorno.
Yeah and I'm more of a sedan/coupe/GT car guy. I've had more fun driving a Oracle II than most of the super cars in this game.