Any motorized cleaner is miles better than stuff like the Spin Clean.
Whether you want a rinse-and-vacuum one like the OkkiNokki or an ultrasonic one is a matter of taste and preference. Personally, I find the vacuum ones way too much hassle and dripping, so I use the HumminGuru. (As does @Mikael_Ollars but he likes the Okki for initial deep cleaning if very dirty, I think).