I've been a fan of the series for a very long time, and I recently picked up Ratchet & Clank: Rift Apart for the PC on Steam. I have to say it is now my favorite for the series. It has the tightest gunplay out of all the Ratchet & Clank games, the funniest story (I've enjoyed Dr. Nefarious as always, but new characters like Emperor Nefarious, Junkbot, Glitch, Rivet and Kit are a welcome addition). Emperor Nefarious being actually competent and British-accented but still villianous douchebag was great, Glitch is like a homage to the Tachikomas from GiTS, Rivet gives me major Krystal vibes (the female vixen from Star Fox) in a good way, Junkbot's banter and relationship with Juice is pretty disturbing and funny, and Kit's extreme neuroticism are all well-done. I've also enjoyed the soundtrack and the amount of crazy homages to other Sony and/or Insomniac titles from Sly Cooper and Jak and Daxter to Uncharted and Sunset Overdrive. It's too bad Universal owns the Spyro and Crash copyrights, because I feel that the Morts and Trudi were aching for a crossover with those franchises. The guns are all still great- there's returning favorites like the Warmonger and the Agents of Doom and new stuff like the Topiary Sprinkler and Mr. Fungi glove (I guess the only place left to go for that category of weaponry was plant and fungal based weapons, since sheep, chickens and everything else has already been done). I'm really enjoying it.
I'm also replaying Ratchet & Clank 2: Going Commando at the same time, which remains my favorite out of the old ones. It's kinda funny that it's space dogfights are far deeper and more well done than A Crack In Time's for the PS3.