TL;DR: 5 out of 5 from me. Despite being a massive space nerd, Wizard managed to bump Fourze from my favorites list completely. It was the first ending since W that hit me in the feels.
Now...for the longer bits, I'll start with the cons from the series:
-Wizard seemed to have a very Sentai-like pacing to it. Most of the KR series have been able to keep story progression up front in each episode while still keeping the attention partly on the MOTW, while Super Sentai seems to have the opposite, in my opinion. I noticed this early on in the series, but kept going anyway. I also did something I haven't done with previous KR series, and that was go back through these forums and read everyone's opinions on the episode. I had seen people comment on Wizard before I'd started watching it, so I wanted to try and see where things started falling off for everyone who watched it while it was current. It didn't dawn on me until around episode 45 or so that I was watching this series very quickly, while everyone else (the comments I was reading) was watching it over a year. When that was considered, I could completely understand why people fell off from the series. The middle section of the series is rather slow, but I think binge-watching the entire series helps to get through the tougher section of the show.
-Shunpei might be the worst character ever put in a television show. Fifty something episodes and I still have no idea what he gave to the series aside from being an obstacle to those who were trying to actually get stuff done. I feel bad for the actor, because I can't imagine him being seen as anything asides from Shunpei in the future. Hopefully not, but I know Shunpei will be forever branded into my memory
-This plays into my first point, and that is that backstory for the characters wasn't given early enough in the series. It's the first KR series since W where the hero(es) were not given their abilities during the first episode and nothing was really explained for a long time. Again, watching this over the span of a year would make it mind numbing. Takenoko mentioned in one of his comments having a spin-off of just Mayu's story, and that would have done this series major favors as well
-Finally, and a more personal peeve, was that not much was applied to the secondary rider in terms of "thought". The most grating issue was probably that they used the same, exact look for Beast Hyper that they used for Meteor Storm. The other major problem was backstory. Kosuke had his story basically explained, but Khimeira was basically an extra in the entire series. Clearly, there were mages dating waaaay back far enough that their gear could be encased in stone. Personally, I think that bit of story could have spiced up the middle part of the series when it got a little dry.
So, for the pros:
-This story was believable. Well, for tokusatsu standards it was believable. I liked both OOO and Fourze, but both of those seemed really far-fetched to me, accentuated by the floating hand and moon base accessed through a school locker. I know it's kind of stupid to say that it's not logical to have a moon base but it makes sense to have a monster born out of a corpse after someone got really sad, but sometimes saying "It's magic" makes you say, "Oh, well that makes sense then." The characters all seemed real, their relationships like something you could encounter in your own life. Furthermore, Haruto's inner struggles made sense. There was nothing over-the-top this time, and it worked, I think.
-Wizard has had my favorite suit since I started watching KR with Agito early this year, and all of the suits (heroes and Phantoms) were also well presented. There is a monster in one of the first few Power Rangers episodes from the first season that was a pig that ate everything and even as a 5-year-old I thought it was the dumbest looking thing I've ever seen and it took away the "believable" factor to that episode. I know it's stupid to say that the costumes helped to make a series likable, but it's true. A bad-looking costume can really take a viewer away.
-Aside from Shunpei, the actors were good. I'll probably always say "Todoroki!" when Shingo Kawaguchi is on screen, but he did a surprising good job with his role late in the series. And as for...
-And lastly, stuff in reference to the finale....
So, now I'll go watch 52 and 53, then get started with Gaim. I'd heard a lot of bad remarks about Wizard leading up to it, but I was definitely not disappointed by it. I truly enjoyed it, and it definitely had one of the best ending arcs I've seen so far.