I always liked Batty more than Arkanoid. maybe because it was such a superb use of the Spectrum, maybe because it was free. All that matters is that it's my favourite 'bat and ball' game, and while I can't say I've exactly followed the genre closely in the intervening years, I can honestly say I've never felt the need to. Batty does everything I want out of an Arkanoid clone perfectly.
The controls are tight, the ball movement smooth and realistic. I tend to expect anything arcade-like on the Speccy to age terribly (and most of them have, to be fair), but not Batty. It even manages to be colourful in an attractive way - not an easy task for the machine.
There's really not much depth to go into in the realm of bat and ball games, suffice to say it's an addictive arcade staple that will probably never go out of style.