I suspect those trucks will do just fine for you. I had a 1999 Tacoma with the TRD Supercharger on the 3.4l and put 100k on it. I bought the truck used with 14k on it for $15k back in 2002, ran it for 4.5 years and sold it for 10k. My point is that the retained value for resale is a point to consider. You never know what your needs will be in 5 years or less, and it's nice not to take a bath on depreciation.
A friend and coworker of mine bough a new 2003 S-15 ZR2 and we put similar milage on and use. The GMC's interior did not age as well. Little things broke, handle for 3rd door failed several times in 100k. Distributor failed for no apparent reason. Most disturbing was how the flimsey tailgate bowed from him climbing in and out of the bed. Sure they guy is 250lbs, but to see the releae handle bow and push so far out is odd. All of the problems were fixable by a DIY kinda guy, and as a whole he was happy with the truck. He did not do nearly as well as I did on resale, but the truck did serve him well.
I got rid of the Tacoma for a 2001 2500 HD crew-cab w 8.1 Allison. I am happy with the truck, and got a great deal on it due to the big motor. I needed it for my 28' enclosed trailer, but it's not for everyone. I am sure happy I don't have a diesel since the price of fuel has been high for a while now.
Sorry for the rant, and hopefully an owner of a Colorado will comment. Good Luck!