Double rubber handles are generally preferable to single metal strap handles – you have… two handles vs one that means they are easier to grab and move and they allow the keg to be easily inverted for draining and drying.
2.5 Gallon kegs fit nicely in a 5 gallon bucket full of ice. They are also nice for splitting 5 gallon batches, serving homebrew on the go and small space kegging.
I have the 5 gallon version of this keg (See: Review) and like it very much.
AiH New Double Rubber Handle 2.5 Gal Keg –