the reason the early 98's are the holy grail is because they had the most power, the quad cab and the best engine of the 12valves. Awesome milage, cheap to upgrade and pull like crazy for at least 300K miles. they bring a pretty penny, though. If you can do without the 3rd doors, buy a 96/97. buy the stick. **** that auto.
RUN don't walk away from my truck. 98.5-02. bad pumps, bad lift pumps, etc etc etc.....well not my truck, but trucks like mine. I have a FASS lift pump, new 027 vp44, and all the other updates to it. a twin to mine for sale is for sale for a reason.
you can pick up a 150,xxx '03 HO (get the HO for the 6 speed) for about 15-18K, get a real nice truck, small chip gets it up to about 22-24 empty, pull like fuggin nuts and good for mid 200xxx to 300xxx miles. truck falls apart around the engine and tranny. I WILL buy an 03 or early 04 (305 horse truck, not 325, that's when the milage dropped off, jan 1, 2004, or model 2004.5)
In reality, you can MAYBE MAYBE find a 98 12v with a quad cab, or do without the doors and find a 96/97 with 150-200 on it and get it for 13K or find an 03 with 150+ on it for a couple grand more and have a nicer truck with WAY better interior amenities. Either are an amazing choice for longevity and milage. just change the oil and rock out.