For intermediate (as in TC's package B) 20k, 60k, 100k..... servicings and major (as in TC's package C) 40k, 80k, 120k...., I will go to Autosavers.
For minor (as in TC's package A) 30k, 50k, 70k, 90k..... servicings, I will go to other cheaper workshops or even in JB. This is because minor servicing mainly is to change engine oil and oil filter only. Can save, save. I'm using my own good and expensive engine oil.