My reply to the above post is kinda late but...i will just go ahead anyway haha.
The well-known travel agencies in Penang are just a handful so you can actually go to each and every agency to get the itinerary and compare prices. Basically they all go to the same major attractions but some may visit extra or less places and some places the agency visit may not be where you want to go. So it would be sensible to find out more about the attractions/sights listed in the itinerary.
What i can tell you is about Ace Tours and Travel. I went with them to Europe once. While the trip was enjoyable(it's Europe so that's a given ), the tour was just ok. Not good till i would recommend it to just anybody but not horrible till i would beg people not to go with them. Maybe it was due to the tour guide. The guide was superficial and seemed to be super friendly and attentive to those who splash their money shopping(where the guide is able to earn commission).
The tour was also conducted in Chinese. Before going with this tour, i had specifically asked and reconfirmed many times about the language used as my mandarin is only limited to 'ni hao'. They assured me they would speak in English/Hokkien and Mandarin. But during the tour, mostly Mandarin was used with a sprinkle of English/Hokkien(whenever the guide remembers). The rich history and myths of the places were lost on me. Coming back, i had to google and read up on it. So that was no fun. Having a guide who is well versed with all the sights visited is important to further increase your enjoyment of the tour. This particular issue may not be a problem to you but it was to me
And also the food. We mostly went for asian/chinese food. Who goes to foreign countries and still eat what we can have locally? Maybe for those who have been overseas a long time and pine for their local home food. But certainly not for those on a short visit. By paying so much and going so far, we want to experience authentic food that is local to that country, not some asian dishes. Of course we did also have their local food, but those were not many. It was so few that i mostly remember the asian food and not the european meals. And i have a nasty suspicion that the European restaurants we patronised are not that popular with the locals. The food was only so-so and the places almost always empty. But there was one place where the food was wow and you could see the proof from the number of seats filled.
The time allotted for certain activities were way too long and some were way too short.
Overall the tour was ok due to the destination. It just could have been much better. Those are just my personal complaints. Maybe you will find these problems trivial so it's really up to the individual.