Well, we've been to Penang and back already. As suggested, we hired Mr. Mogan as our driver/guide. We were 3 adults and 3 children. It turned out to be a very wise choice indeed! His charges were RM25 per hour for a minimum of 3 hours. He even got his cousin to drive us to the Bukit Mertajam area when we wanted to go there as his cousin was more familiar to the area. What initially started out as a one-day tour with Mr. Mogan ended up as a 4-day personalised tour because he was THAT good. He was always punctual, very knowlegeable, very helpful and spoke English well. Being a native of Penang, he knew the best places to go to and to eat at. Knowing Penang intimately myself, I can vouch that he gave accurate and up-to-date information regarding Penang. One of the nicest aspect of our time with him was that he was willing to listen to us (as opposed to pushing us to do all the touristy stuff) and tailored the outings accordingly because we knew exactly what we wanted to see and what we did not. He only charged us RM50 to send us from our holiday apartment in Batu Ferringhi to the airport as a token of his appreciation to us for hiring him for those many days. As our token of appreciation, we tipped him big because we were really very, very happy with his services! I highly recommend him as a safe and reliable driver in Penang. His phone number and address are as mentioned by Lofoten95. Thank you, Lofoten95, for recommending him!