I think SD pretty much nailed it. It's really about what factors are more important to you. And of course, the chainplate positioning doesn't "make the boat"--there are many other factors. I like having inboard chainplates because I like to be able to beat upwind (tighter sheeting angles). Since we cruise on weekends mostly, being able to get where we want to go while still sailing is nice.
But if we were cruising long-term, then the tighter sheeting angles might be less important to me. For that lifestyle, timelines and "needing to get there" would be less prevalent.
Of course, as I mentioned, chainplate position by itself is just one of a thousand factors in which boat is better for a specific usage (and owner) over another.
1984 Sabre 34 Mk I