If you'll permit me to categorize the Knights, I think there's basically three. 

Military-Industrial: rugged, robust, modest performance but tough as nails. 

Tech-Bro: sleek, high-tech, high performance, but complicated and expensive maintenance. 

Exotic: Weird shit, often as a result of being kept close to the original alien technology. A wild card, as far as pros and cons go. 

That's just my take from what I've read, though. Obviously there's also limitless variation between companies and models. 

I'm torn between playing "rich kid with daddy's Ferrari" and "hyper disciplined child soldier trained from birth, driving a tank."