depending on your needs, it might be worth to get (, or not). it's mainly about regular maintenance and upgrade abilities:

1. it has a good cooling system. it's cool and silent. the stock cooling system should be able to cope with up to i7 3840qm cpu (afaik, the cpu is still a PGA package, not BGA package; meaning you have the choice to switch cpu's. BGA is soldered cpu's).

2. it is a smaller form factor; it should be convenient for you to carry it around; of all the asus gaming laptops, the mobility of this laptop is relatively much better (only 2.5kg with battery);

3. if it's used for common work purposes, it might be powerful enough to last for the next 2 to 3 years (if it comes with i7 cpu then it's good enough). there is nothing noticeable between a ivy-bridge and haswell in terms of performance imo if you're talking about common usage. as for gaming, the 660m is fine for less demanding games; but not for current resource-hogging games.

now some short comings:

1. support service: this might be a problem to you. many said the after-sales tech support sucks; only one said they have good tech support; however if you are experienced, you can manage it yourself. there are some good tear-down guides for your reference.

alternatively, get it from local sellers like illegear, but please make yourself aware of service charges and shipping costs that their service will cost you (but i believe they will charge reasonably).

2. self maintenance: it's compact, so it's relatively hard to do regular cleaning up (fans, vents). yes you can get it done at service center, but see above.

3. upgrade abilities: from what i've read, the ram is up to 16gb (2x 8gb; 2 ram slots); the laptop has an mSATA slot (for mSATA ssd's). the problem is, there is no place holder for a screw to secure it.

4. battery: to take it out, you need to do some dis-assemblies first.

g46, like other g-series, is a good laptop. if it runs fine for the first few weeks without glitches, it's probably relatively defect-free for the rest of its shelf life. make sure you check all the common hardware right after you have purchased it (cpu/gpu temperatures under load; screen; ports - usb, hdmi, minidisplay/thunderbolt, headphone jacks, wifi; keyboard lights; all fn key combos, battery charging, etc.) this is a typical step you should do for all your electronics. if you found defects, straight away go and find the sellers for one-to-one exchange.

still, you have other choices. i would suggest you look around. the price tag on a g46 is relatively expensive if you compared the specs alone.