Thanks sir . If I can get > 170mm of drop, thats great. Currently using a 170mm oneup dropper, and I think it would be hard to get used to less I think.To your dropper Q, I'm running a 170mm PNW Bachelor, which doesn't have the lowest stack ever, and with about 1.5" of space above the post clamp before the threaded seal head assembly on the post. I could go about a half inch lower into the frame without running out of space. With something shorter like the OneUp post, I bet I could just barely run a 200mm post.
I had an alloy Sentinel before my Titan, which was 15mm longer reach. Ran a 40mm stem on that bike, running 50mm on my Titan, and fit really isn't that much different. The Titan has tall stack, so feels bigger than the reach would imply.
To your point, I've got a big spreadsheet of bikes I'm considering. And calculating the "Span" distance for each bike has actually been really helpful (the hypotenuse "distance" resulting from the reach and stack heights). As it helps show the distance from hands to feet, and which bikes should actually "feel" bigger.
The Large Titan has a bit larger span (797mm) than my current Kona Process 153 29'er (782mm), even though it has 5mm less reach. Currently using a 50mm stem on the Kona, and it still feels a touch small, and without being able to demo, its hard to know if the large titan is larger "enough".
The XL Titan has 819mm of span, so its a fair bit bigger.