[Guyver Spawn]

From the ones that I've seen:

Zyuranger > MMPR Season 1
Goaranger > Wild Force
PRM > Go-Oranger
Gosiger > Megaforce
Gokaiger > Super Megaforce

Zyuranger was much better then MMPR, but both shows are very different from each other and I don't find it fair to compare the two since MMPR was trying to be it's own show. MMPR as it's own show is still not very good since I find the writing and the acting to be painful to sit through.

[Klonoahedgehog]

I honestly prefer Super megaforce over Gokaiger.
SMegaforce is so bad that it's good for me.

[WhiteRanger]

ok for me

Dairanger > MMPR Season2

Zyuranger > MMPR season 1

GaoRanger=Wild Force: i like both shows equally.

Dekaranger > SPD: i like both for different reason but Deka Was better.

Boukenger = Operation Over Drive: Both i liked equally and ejoyed them as much as each other.

MagiRanger > Mystic Force

Go-Onger=RPM: Go-onger was my frist serise so i can really say it better then RPM due to i liekd Both just as much as each other.

Shinkenger > Samurai/Super Samurai

Megaforce> Goseiger: Same Reason as other People stated above.

Super Mega Force > Gokaiger: I like Gokaiger mainly for the suit changes and zord fights but i had no really connection to the past sentai actor reprising there roles due to i had not seen there season or grew up with them. super megaforce i enjoyed more due to i grew up with power rangers and i still will support the franchise regardless of how bad it is.

Gekiranger= Jungle Fury

thats it for me.

[Guyver Spawn]

Goseiger was better then Megaforce in my opinion. Sure most of the show was boring, but at least the characters had personality and the show had a original story. MF felt like a water down version of MMPR and I didn't care for anyone in the show other then Robo Knight. I know it's anniversary special, but so was Wild Force. Wild Force was not trying to be MMPR 2.0 like MF in my opinion.

[EnerPrime]

Boukenger> Operation Overdrive

I've never actually finished OO, but giving up on it six eps in is a pretty clear indication of which I prefer.

Go-Onger < RPM

I made it through ten eps of Go-On, while I got so hooked on RPM I finished it in one sitting.

Gokaiger > Super Megaforce

SMF's cameos/legendary ranger modes may have more nostalgia value, but that doesn't make up for the fact that the characters, writing, acting and pretty much all other Saban original parts of the show are crap. The Gokaiger production team put more effort into one episode then the SMF team put into the entire series so far.

[Sunred]

Lightspeed
RPM
I dont hate Go-on but they finished the Disney era with a bang.

[WhiteTiger]

Yeah, I am a Mega Force fan too. Couldn't stand Goseiger. I'm going to make a list of which ones I liked better.