I'd suggest they all have good names, and that your decision might be better made on:
1- Can you find a local dealer and local
service, with a good reputation? (One who will do the
installation if you aren't.)
2- What else will you be tying to it? Integrated systems are popular, but the gizmos don't always integrate across brands. And when they do, a "brain box" may also need to be added. So consider the whole system, if you're planning to upgrade to one.
3- Warranty. When all else is said and done, you pay for warranty, but the company that gives you the longest one, is expressing faith in their
equipment. And if you make the
purchase on a credit card, you may be able to get an extra year of warranty coverage from the card company. I know someone who saved $1500 on a big tv
repair that way. (Out of my league.<G>)
4-Useability. Try to get hands-on, see which ones make you fiddle with menus and buttons, and which ones have nice controls with single-purpose labels and functions you can understand!
Good reasons to visit some dealers, or catch a
boat show.