A nice simple LFO which does exactly what LFOs do, for a reasonable price and not too much space in your rack either. The A-145-4 certainly is useful as either a four LFOs or even as Triggers (or both at the same time too).
For the rest, it's a Doepfer, which means good quality product, sturdy knobs and the usual plain look. Otherwise, if you want more control (meaning CV attenuators or whatever), you'll need to put a bit more money towards a more sophisticated module.