[Jdwnsdm]

i need a new backup, which is the best

[SSD_JAKE]

I'd go pmr. I picked a mini and my friend got the 2011 rail and I wanted to trade lol it has outstanding features I'm sure you know about, and has a crazy smooth shot as long, as you don't mind the high dwell it's a great choice

[Weroliera (Banned)]

I've shot a pmr 2011. So smooth

[dps093]

Pmr

[GetPumped]

nah man extcy beats pmr every step of the way yo!

[The Ginga]

i have had a g4, a pmr, a mini, and i had a blitz which is basically like the lower version of the zenith....The g4 is going to break on you at least twice before you give up on it, the my blitz blew an oring everytime i played with it, my mini really held up and i was never disappointed in it plus it can be up'd with anything you need or dont like, but the gun i always kept around was my pmr...once i put a virtue board in it and got the dwell setting on it just perfect i was almost out shooting guys with egos and dms so PMR would be your best bet...just make sure you get a good barrel and a rotor

[SKI008]

Zenith is a blow back and DP has been known to have quality control issues (also G4s kick like mules)

I'd go Mini or PMR.

[eatafetus]

Id say G4 all the way.

on/off asa
clamping METAL feedneck
easy mainataince
less complicated bolt system

G4's are actually very reliable, not to mention extremely cheap if you get them used. they are great solid shooters that can compete with any high-end (well lets face it, most of the guns you mentioned can at least compete)
the reports of them being difficult to maintain and breaking down are silly, its the most simple gun to work on ever. they shoot great and they certainly do not kick like a mule...

[inferno2inferno]

PMR stomps all the guns in that list aside from the mini. It is the most reliable, smooth shooting, lightweight gun of those listed. The mini is better in terms of consistency but does not have as smooth a shot IMO

[ProjectPb]

eXTCy. Hands down is the best shooting gun under $400 new.