Picking out a new trumpet is almost like finding a new pair of shoes: you don't know how it feels until you try 'em. That being said, I highly, highly, recommend that you go out and try these horns at your local music store. The owners should (rather will) let you try them.
I have tried out both of these horns that you speak of, and let me be clear: everyone is different. Everyone has different needs/wants for everything, so opinions vary a lot. I play on a Bach Strad too, although I took out the manufacturer's crook and replaced it with a Calicchio single-brace crook because I like less resistence.
Anyways, the Yamaha Xeno is definitely a step-up horn from a Strad, no doubt. There a many different models of the Xeno and each one achieves a certain goal, whether it's response, clarity of tone, easiness of hitting partials, etc. Allen Vizzutti plays on mostly Yamaha horns because they are reliable and they get the job done when it needs to be (you can check out his clinics on YouTube for more of his insight). Therefore, it is a very dependable horn, and I would have virtually no problems going from a Strad to a Xeno, provided that I did my homework. Some of the pros are: easiness to hit partials, colorful tone, resistance/response is consistent throughout all registers, I believe some parts are interchangeable, and beautiful craftsmanship. The cons vary from person to person, but some of them are: they are pretty pricy (you'd be the luckiest trumpeter on the planet to get a pro model horn for a good price on Ebay), they are ubiquitous, in other words, competition to get these horns are common, and (my personal opinion) they feel a little too "metally" (sometimes the valves don't feel smooth or there are times when the tone is a little inconsistent, but those problems are barely noticeable).
Getzens are a little interesting, since in the past they have been doing mostly student-model horns and their business operations weren't exactly as a big as Selmer, Bach, etc, etc. Thus, finding good model Getzens these days are pretty tough, but not impossible at all. Most of the Getzens that you will find are student models or low-level horns (except, of course, the 3050 series and the Artisan series, developed by Mike Vax), so be sure to do the homework. Plus, because of the somewhat rarity of finding a good Getzen, prices are generally not the best either. Anyways, when you find a good Getzen horn (especially the 3050 series), they are REALLY good. They are, arguably, in pretty good competition with Yamahas because they are also pretty dependable and reliable in many aspects. Therefore, some of the pros are: pretty bright and clear tone, pretty good consistency throughout all registers, response is generally fast and consistent, and craftsmanship is pretty remarkable. Some of the cons, though, are: there are sometimes where there is too much resistance (tone can suffer), more maintenance may be needed than necessary to keep the horn in good condition (the material may not be consistent throughout the whole horn, but it's pretty rare), the availability of the horns, and the prices (of course).
Again, these are just my opinions from my past experiences, and they will surely differ from yours. Therefore, I can't stress enough how important it is to TRY them out. They both are great options, but you are the final judge in what you want your music to sound like.
I highly recommend listening to other people's opinions, video demonstrations, performances, etc, where these horns are showcased. Also, this website:
http://www.dallasmusic.org/gearhead/, is a great resource when searching for new horns, maintenance, questions, etc.
Hope this helps, and good luck with your music!!
belltrumpetplayer19