BEST truck under $35000 give me your opinion old timers

Hi I am looking to add 3rd truck to my fleet for a very nice responsible experinced driver.
my budget is under 35 k and i am just torn in to what to buy. Currently I have 2002 century with detroit 12.7 taht runs great . its and old truck but the driver doesnt mind. my 2nd truck is 2006 columbia with detroit 14ltr.
I got lucky with both of these trucks and i am hoping to get lucky again.
The 3rd driver i got doesnt mind 2006 but nothing older than that .
Some of my options are : 2006-2009 volvos with isx egr-delete and roughly 700-800k miles
or 2009-2010 columbias with detroits with egr around 700k miles
and the cascadias dd15 with around 600 k miles
or do i go with a 06 volvo with fully rebuilt isx engine cyrrent milege 40k but original miles 1.4.
I am experinced owner op. ill do my research and background checks on all these trucks .. but just wanted to get your thoughts from all you vets out there .... i know its kinda broad QUESTION . but just give me your opinions on what would you do -especially with the dd15 ( i hear bad things about them )
I always depended on this site and your opinions and it has always helped me to stir up my thinking .

here are currently 3 trucks i am looking at

http://seattle.craigslist.org/tac/cto/5931106101.html - has been seating for 5 months ! 2 owners , 1st owner swift op. 2nd guy pulled heavy loads to british columbia for 1 year . doubles . he bought a pete but still owes on this truck ..doesnt make sense . i oasked what he thoight about 25 k and he he would consider 29

2nd truck NO PIC YET. 2006 volvo isx , 1.4 miles . 13 speed eathon..40k on 30000 miles rebuilt by volvo . pulled mail light fedex loads teams oregon-idaho and back 5 drivers drove it . 1 original owner . didnt make offer yet

3rd http://portland.craigslist.org/clk/cto/5929465931.html ad says it all...... these are just few samples on whats outhere ... any information and thoughts would be appreciated .

 

its really hard to find nice pre egr truck man. i 've been looking .

 

easily

I agree . He is not to picky . he just wants something thats not going to rattle and be super loud . He wouldnt mind older truck but its really hard to find good older truck . I've been looking hard . also This is one of my best drivers who is never late on load who never complains who does his job right and i want to make him happy

 

He doesnt care what kinda truck it is . as long as its safe and doesnt rattle to much . I've been looking for older truck but cant find one thats in good shape