Given that all I know about you and. your brewing habits is what i've read in this post my question is....
Why are you ready to invest so much in a kettle if you don't even know you'll "like the beer you produce"?
My First kettle for brewing was a 9 gallon bayou classic. Probably cost 1/4 of what the spike cost and I'll guarantee the spike won't improve the beer over what I made with that kettle.
I'm not a fancy kettle guy. I brew 10 gallon batches and after 10 years I still use cheap kettles. I have two 16 gallon Bayou Classic Kettles.
Expensive kettles won't improve your beer.
Having gotten that off my chest...haha...are you sure you'll never want to brew more than 5 gallon batches? Will you brew higher abv beers?
Are you an extract brewer and do you intend to stay an extract brewer or will you mash your own? If you do what kind of mash tun will you use? If you do AG BIAB 10 gals could be tight for bigger beers.
So...yea...lots of questions around your future as a brewer WILL have an impact on the kettle you want or will need in the future. If you're spending a lot on equipment I'd be sure it fits into the plan for the future @neckbone brewer and isn't a wasted investment.