My favorite 700s are the ones from the 70s and 80s. Walnut Stocks, nice checkering, forend tips etc. With the future of Remington still unfolding, I think most will be holding on to their 700s. Haven't seen an older one offered for sale on this site in a long time.
the ,4703 bolt face is probably the most common, so that should not be an issue. For the older ones, I like the look of the long action too.