Yes. 1.0A is fine for the stated locos. These locos have few/no lights, low current motors, no smoke units, and they aren't asked to pull heavy loads. If you start adding lights and/or more motor load, you'll need to re-think the current rating. Please remember that decoders have a motor current rating, a function group current rating, and a total (motor+functions) current rating.
Make sure you check the voltage rating of the decoder. MTS track voltage is approximately 24V.
While it is a bit pricey, I like the Zimo MX-64H. Here is the manual...
Unlike many decoder manufacturers, Zimo does a good job of listing the decoder specifications. The MX-64H decoder has a ton of functions and Zimo also has the best slow speed operation of any decoder.
Of course, there are also cheaper HO scale alternatives from NCE, Digitrax, Lenz, ESU, etc. Not all decoder manufacturers list the voltage ratings of their decoders, so, as always, do your homework.