My opinion.
I have a 210 and 75, with battery back-up, and LED for both. I use an eheim 1260 and 1262 (internal for both to keep heat). As for back-ups, IMO, what you pay for is the immediate switch over, and the battery. I made a DIY backup to run my (2) returns, (2) skimmers, and a few other pumps, mp40's, etc. I've added more to it's load since I made it, and it runs for around 16+ hours, but I used (3) deep cycle marine batteries, which cost way more than the echotech back-up, but does way more. I used a contactor I made to auto change over, so all pumps keep moving, with no hick-up. With a generator, it all stops, until you restart manually, then salt splash until your sump goes back to normal level, and your skimmer overflows, causing possible stress for days to come. With echotech, I'm guessing it's automatic, but I think it goes to half power. Mine stays in full power mode, all vitals keep going automagically. To each their own. Echotec's isn't that expensive when you factor buying a good (or a few) batteries, a set of contacts, a charger, and inverter. Your needs may be different, home time to start a generator, life style/storage of such, money in tank you don't want to die, etc.
For LED's, I disagree with "they are better color than metal halide", to a point. I like mine very much, I've got reefledlights.com DIY, very happy, but there are many types of lights I like. I don't really think one is better than another, they all have pro's and cons. Beauty is in the eye... LED I use grows sps awesome. "Better color" is an opinion. The fact is, LED work very well, low electric consumption, low heat. They are hard to beat. I use them. Gus's look very nice. It may be worth a try.