Look good!

I never considered the Hummer as a mountain bike. Here's the comparison !
http://i1284.photobucket.com/albums/a566/k...zps63pbdvcm.jpg
If that's your intention, I still suggest you go for cheaper mountain bikes like Trinx or a Raleigh. At least it is a mountain bike. A hummer is neither here nor there!

Too flimsy to be a mountain bike and too heavy for road use. There are too many moving parts for that quality. Even the forks will get stuck after a while. Only advantage is the folding capability which is not really that great either, the folding mechanism is not strong. At least with the Trinx, you get a better drivetrain, rather than the chinese freewheel hubs which is hard to calibrate. Better still, the Raleigh, you can get 24 proper Shimano speed. Since you are not going offroad, the Trinx hybrid is the best for you. Comes with Shimano Claris roadbike gears.
If going over 1K is not worthwhile for you, I suggest you go for the 20 inch foldies. It is enough for you to get your exercise around the flats and taman. Believe me. Many newbies have the impression that the smaller the bike, the harder to ride which is not true. Actually smaller bikes rides uphill easier due to smaller wheels but slower. Penang even have a Jab group which has 12 inch wheels and they ride up to the Balik Pulau hills easily.
Quote, \" I don't want to spend too much just in case I become lazy. \" Unquote.
From here I can deduct that you
WILL become lazy after you ride the Hummer. Hahahaaaa! It's heavy and the tires are wide! Usually we mountain bikers prefers lighter bikes, more crucial to us as the resistance on riding offroad is too great.
Still it's my humble opinion. The choice is always yours.
Thanks Etigge for the opinion. I re-look some of the folding bikes in the market and found XDS AFB 710. Do you have any view about this bike compare to others?
There is a Trinx KA2627. I don't think this model is available in Malaysia. Any idea?