Peterbilt vs Freightliner?

Ok here goes. About to jump into owner operator territory. I have the option of a 15 peterbilt 579 13spd w/paccar mx rated at 455 w/271k on the odometer, or a 2018 freightliner dd15 10spd rated at 455. I've driven both, however freightliner I've driven the most, and am used to it's quarks and handling capabilities. My question is, which is worth it. The Peter is $200 less a month, but the fact that it has 271k on the dash scares me because I don't know how it has been treated. I know fundamentally the Peter is better overall quality as far as the build is concerned, but I don't want to sign for a truck that I might wind up going bankrupt on as soon as I try to leave the lot (due to crapped out transmission or notorious electrical issues). Any non biased, logical responses would be greatly appreciated. Oh, term length is 3 yes for the freightliner, 52 weeks for the Peter.

 

Again, logical and helpful responses are appreciated. These are the options I have. Leave personal feelings at the door I'm looking for real advice please.

 

It's $200 less a month, not 2000.

 

Both trucks have a tripac APU. Financially speaking, I put 3k towards the truck, and have a little working capital, but not enough to cover a transmission replacement from day 1 if the tranny is crap in the pete. Personally speaking, both trucks are suitable. Yes, I love Peter more than others, because the ride quality is superior. However, I've heard horror stories about the paccar engine, whereas the dd15 is an established, somewhat reliable engine (at least for the mileage I can expect to rack up in 3 yrs solo). All the company freightliner I drove had dd15 engines with less than 455hp, however the engine was only worth a #### when paired to a 10spd. However, the 2012 cascadia I drove had Def failures out the wazoo after only 220k on the engine. My biggest hangup is, while the Pete might be the better option price wise, it's only so by 50 a week, and the fact that I only have 20mins to inspect it (without driving it) before I sign for it so I'd have no real idea of what I'm walking into. Tranny could be crap due to some Jackoff floating gears for 270k miles and not having any clue what he was doing, and I'd never know until it's too late. At least with the freightliner I'd know what condition it's in, because I'd be the first and only driver.

 

I don't know how saying I won't be allowed to destroy either truck is giving financial advice. And yes, buying a truck is a personal choice, for many factors, however I'm asking for advice based on personal experience with either engine. I've never driven a paccar before, and I don't want to commit myself to a year long contract on something that might destroy me financially due to mechanical unreliability.