I would recommend neither as a first ship photoetch project. Both are large projects with lots of little fiddley bits. Both are relatively expensive, with the photoetch sets becoming very much so. You may become hesitant to dive into the projects for fear of screwing up the expensive material. The project will seem to go on forever with no end in sight.
What I would recommend is a photoetch learner kit. A smaller project with fewer parts. You will have the satisfaction of seeing the end of the project, and by completing it you will have the knowledge and confidence to undertake a larger, more complex project.
What I would recommend is the Tamiya USS Fletcher or the Trumpeter USS England. Both are 1:350 scale and are relatively inexpensive as is the brass. Being less expensive you will not fret as much when you make mistakes -- and you will make mistakes. You will be able to see either of these projects to completion and gain the knowledge and confidence to undertake the larger project.
VV edit
Let me run some numbers past you. The following are MSRP in US Dollars. Your purchase price may vary:
Tam Missouri $105.00 GMM PE $42.00 or WEM PE $83.21
Trump Hood $116.99 GMM PE $42.00 or WEM PE $83.21
Trump England $ 33.00 GMM PE $20.00 or WEM PE $33.24
Tam Fletcher $ 36.00 GMM PE $32.00 or Flagship PE $38.00 *
(* WEM does not make a Fletcher PE set. The Flagship PE set for the Fletcher is equivalent. I do not recommend Toms Modelworks PE to a novice (even thought they are less expensive) because the brass is softer and smashes easier.)
You can see, that at 200 dollars - the Hood can be an expensive learning tool. But for less than 75 you can learn the techniques which you can then apply to either the Hood or Missouri later.
^^ edit
I am also considering adding the Revell Emden German WWI cruiser to my list of learner ship kits. The photoetch is only available from one source (GMM) as opposed to multiple sources for the other kits.
I do not recommend the Trumpeter USS Sullivans destroyer for a novice kit. There are too many issues with the kit which need to be addressed for a novice to undertake.