sleepyxvu

hello TL forum, you have another newbie... i am in the market for an older 2nd gen TL and had read in a post that 2000 would be a better choice than a 99, but then i also read in another post that 99s were better because they have a different tranny problem that is easier to fix? i guess my question is what are the differences between the years if any, and which would you guys go for? also do you guys think waiting to find one with navigation is worth it or not? how is the navigation systems on the TL's? thanks in advance.