I would go with the 01 with TRAC. You can tell when you turn on the key of a 100 - there will be TRAC and VSC dash lights that come on and then go off after the engine starts (unless there is a problem - then they stay lit).
The 01 with 100K miles is indicative of highway miles. The 98 with 50K indicates lots of sitting and short trips. Since your use includes short trips to work, I would change all fluids (diffs/transfer/trans) to synthetic as soon as you get the LC.
The 01 with 100K miles is indicative of highway miles. The 98 with 50K indicates lots of sitting and short trips. Since your use includes short trips to work, I would change all fluids (diffs/transfer/trans) to synthetic as soon as you get the LC.