i dont buy too many apps. some i buy i really regret. some are very useful

+ good
tasker (bring the android experience to a whole new level via automation and bulk action)
swiftkey (the best keyboard ever of all time, i did tried many alternative and this wins)
titanium backup key (essential for rom flashing)
snap camera (great camera with loads of features)
nova launcher pro (favourite launcher, pro version unlocks all features)
rom toolbox pro (easy nandroid backup)

- regret
camera JB+  (obsolete compared to aosp cam)
widget locker (lockscreen widget not really useful, even after 4.2, i never use them)
HDR cam+ (totally useless app, snap camera have better HDR)
swype keyboard (pales in comparison to swiftkey)
set cpu (i dont underclock anymore)
apex launcher (prefer nova launcher)
friendcaster pro (default FB app is good now, no need 3rd party app)

swype looks promising at first, very nice button placement. lost of predictions appear.
but then i realize it doesnt predict next word very smart. many times it predict nonsense and unrelated words.
end up making more mistake.

swiftkey predict 3 words only, but many times those are the words i want to type next.

example i wana type "wan tan mee", after i type "wan", it predicts the next 2 word as the first option, knowing i always use this word. swiftkey also memorize buildings, location that i always type. another example, it predicts "canai" after "roti", and "lemak" after i type "nasi", it can also do "pasar" "malam", which is really good.

swype just doens't do that for me. i already used it for 1 week, should be enough time for it to learn my habbits.
it only predict normal english grammer, but not custom terms.

another thing i notice is swype might be using more battery.
swiftkey never appear in my battery usage. but swype appear to use as much as whatsapp in my battery usage.

swype no google voice shortcut, it uses dragon something for voice, which sucks.

the only downside of swiftkey is no chinese language. i need to switch to googel pinyin ime for chinese input. but thats not too troublesome for me since i rarely type chinese. swype can directly switch to chinese which is very convenient.