Samsung's flagship devices – the Galaxy S4 and Note 3 – and Apple's iPhone 5S are arguably the most popular handset/phablet devices of this year.

Google has yet to unveil the Nexus 5, which is slated to be as popular as its predecessor, the Nexus 4, by the end of this month.

If you are still waiting to buy a handset this year but can't decide which one to get, compare the specs of the Galaxy S4, Note 3, iPhone 5S, and Nexus 5 below to see which device is right for you.

For the budget-conscious, consider the Nexus 5, which is rumored to start with a price tag of $299 despite its high specs (see below).

Specs for the Samsung Galaxy S4 can be seen below:

5 inch full HD Super AMOLED 1920x 1080 display, 441 ppi

1.9 GHz quad-core processor / 1.6 GHz octa-core processor

2 GB RAM

13 Megapixel autofocus rear camera with flash / 2 megapixel frontfacing camera with full HD recording at 30 fps

2,600mAH battery up to 15.5 hours talk time

16GB, 32GB, 64GB storage

NFC, LTE connectivity

OS: Android 4.2.2. Jelly Bean

Specs for Samsung Galaxy Note 3:

5.7 inch Super AMOLED display with 1920x1080 resolution

2.3GHz quad-core 800 CPU processor in LTE variant/ 1.9GHz Exynos octa-core CPU in 3G variant

3GB RAM

13 megapixel rear camera with LED flash with full HD 1080p 60fps video/2 megapixel front-facing camera

3200mAh battery

32GB, 64GB storage with microSD slot

S Pen

NFC, LTE connectivity

OS: Android 4.2.2. Jelly Bean

Specs for the iPhone 5S are as follows:

4-inch retina display, 1136x640 pixel resolution 326 ppi

A7 chip with 64-bit architecture

M7 motion coprocessor

8 megapixel camera with 1.5µ pixels, true tone flash / 1.2 megapixel Facetime camera with 720p HD video recording

Built in fingerprint sensor

Lithium-ion battery, up to 10 hours talk time

16GB, 32GB, 64GB storage

LTE connectivity

OS: iOS 7

Nexus 5 rumored specs:

5 inch display with 1080x1920p resolution

2.3GHz Snapdragon 800 processor

2GB RAM

8 mega-pixel rear camera/1.3 megapixel frontfacing camera

2300mAh battery

16 GB, 32 GB storage

NFC, LTE connectivity

OS: Android 4.4 KitKat