Have a look at the Cadence CP2000....you can tailor your package to exactly what you need to suit your fishing and get 10% off at one of the Cadence roadshows.
Also, do you really need a 16m? How often would you use it at 16m....14.5m is plenty...IMHO
Correct me if im wrong but the Signature pro 800/900 will be discontinued soon - if not already, to be replaced with the 821/921 which is on a different mandrel from the 6 back to butt. So spares may be hard to come by for the pro 800/pro 900 if he goes down that route.
Spares will be available for years to come why wouldn't they ?
How long do you want to look into the future, better not buy xyz just in case its discontinued etc
Technology moves on so why would you want to keep the same pole for donkeys years ? You don't keep the same smart phone for ever.
Buy a secondhand Tournament Pro x or maybe a G90 or Whisker new, spares will be available for many years unlike some other brands.
I see people are looking for sections for poles now that we're only released a few years ago, I can fit sections that are 10 years old on my Daiwa.
I said spares may be hard to come by. Not that there wouldn't be any. And I think its also fair to say, if you are going to recommend a pole or item of tackle that will soon to be discontinued, then say so.
Anyway. I'd recommend the preston XS70. As a great all rounder for less than 2k.
Spares current. Poles current. Spares available from three different models past and present, if need be that all interchange. And reasonable price for spares too.