I have had a pair of these speakers for approximately 6 months. I identified the model as Legacy II from from the link that mhardy6647 provided. Here is a pic of one of mine as-bought.
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I replaced the surrounds with a pair of generics off ebay ($7 with shipping). I have yet to install new crossover caps, though.
I have these sitting on 18" high speaker stands in a carpeted living room. As they are, these are very pleasant speakers. Bass response is strong, and they put out clear, smooth-sounding mid and high frequencies. I like them. Unlike some that I have had, no one will accuse these speakers of being tiring.
Please note that I find their response to be lacking at low, late-night volume levels. Raise the volume just a smidge to pre-kid's-bedtime level, however, and the woofer jumps to life and they sound very good. If I had to downsize to a single pair of speakers, they would be in the running, but I would want to use headphones for late-night listening. I probably should anyway. This particular criticism may be unique to my pair. I do not have experience with any other Advents that would permit me to judge.
I am not a fanboy for or against any era of Advents, nor do I worry much about resale value of equipment. I simply keep and use speakers that I like.
For perspective, once I swap in some new caps, I will have approximately $40 sunk into my pair. Though that is more than I am accustomed to spending, I am not unhappy with that amount for these speakers.