I'm on Zenyum Plus and currently on set 4 of 30 so I'm unable to speak about the end results. However, the experience with Zenyum has been positive so far. The aligners are not painful but it took me about 2 weeks to get used to them in terms of speech, discomfort and learning how to remove them. Nowadays I sometimes forget I'm wearing them. I have had to adjust my eating patterns and I brush/floss 3 or 4 times a day but you get used to it.
If you go to Dr. Lou in Malaysia, I would suggest getting an appointment on a weekday so she isn't so rushed.
Jocelyn, the customer representative has been very helpful and always available throughout the day to answer questions