Now that various tech firms such as Motorola, OnePlus and LG have unveiled their devices, users have a wide variety of smartphones to choose from when they hit retailers later this year.

But before deciding on which one to buy, it would be best to compare their specs and prices first.

Before the year ends, users can choose between the Moto X 2015 Pure Edition, OnePlus 2, LG G4 Pro and the LG Nexus 5 2015 edition as their next smartphone. But, with such a variety of choices, it's a bit hard to decide which device will actually suit one's needs and budget.

Out of these four devices, the LG G4 Pro and the Moto X Pure Edition sport the biggest displays, at 5.8 and 5.7 inches respectively. The OnePlus 2, on the other hand, features a 5.5-inch screen while LG's Nexus 5 2015 will come with a 5.2-inch display, Stark Insider noted.

In terms of processing power, however, the LG G4 Pro stands out from the rest since, according to rumors, it will come with Qualcomm's Snapdragon 820 chipset. The OnePlus 2 comes in second with the updated version of the Snapdragon 810. As for the Moto X Pure Edition and LG Nexus 5 2015, they are powered by the Snapdragon models 808 and 620, respectively.

Regarding the prices of the devices, the OnePlus 2 and Moto X Pure Edition are the cheapest among the group. The former's retails price will range from $370 to $448 depending on the variant's storage capacity. The price of the Moto X Pure Edition, on the other hand, will start at $399.

As for LG's Nexus 5 device, various sources speculated that it will debut with a price tag of around $400. The South Korean company's G4 Pro, however, is the most expensive among the four with a possible retail price of $900, according to Neuro Gadget.

As to when the public can expect to see these devices stores, International Business Times reported that the Moto X Pure Edition will be released in September. LG's G4 Pro and Nexus 5 2015 are expected to come out either in October or November.

Lastly, OnePlus will begin shipping out orders for its current flagship device this month.