There are a few questions for you first that may help narrow down your choices a little and make things less confusing.
What is the size of your room?
How close is your sofa to the rear wall?
What are your main sources?
What’s the anticipated split of use between movies & music (& gaming?)
Will you be outputting everything to a TV or Projector?
Do you want just 5.1 or 7.1 (surround) or full Atmos (speakers either in the ceiling, or pointing at the ceiling?)
Generally speaking some of the best advice I have heard is to pick your speakers according to your room (we can help with that), and then pick your amp that best suits the speakers, within budget limitations of course.
I have owned Monitor Audio Radius, Silver, Apex and Gold speakers in the past (and have Silver FX rear speakers now).
Radius is superbly built, have amazing tweeters that are really well judged. They’re extremely quick, snappy and exhilarating, but can also play piano with beautiful tone, delicacy and body.
The R270 has glorious midrange. For movies they’re superb and actually could easily take an amplifier upgrade or two before their limitations start to show. They can be truly jaw dropping at times, and the inclusion of a tall but slim floorstander really sets them apart from their competitors that tend to be limited to small satellite speakers for the front L&R. Their size really helps with two channel sources.
My only criticism of them was that they could sound a little boxy occasionally, and the centre channel speaker was a little too small, so the soundstage didn’t expand much beyond the speakers themselves. They were very directional speakers. I would actually pair the R270 with the Silver centre speaker. I think that would match better in the midrange. The small Radius centre matches the smaller R90 better. The centre speaker carries so much of a typical movie, that it’s a very important speaker in your set-up.
The finish of the Radius range is equal to the larger Silvers, and a significant step up from the Bronze range.
For me, the Silvers are MA’s sweet spot of performance vs budget, and I actually prefer them to the Gold GX50’s / GXC centre I had. If it was my money I’d go for the Silver range, even if I had to purchase a smaller Silver speaker as opposed to a larger Bronze speaker for the same money (subject to room of course).
FWIW, I preferred the Radius 270 to the Apex A10’s. Not really a fair comparison, but the much smaller Apexes’ tweeter was less engaging to my ears (it was a little softer and felt rolled off in comparison to the Radius range) and didn’t offer enough midrange.
I have no experience with MA Bronzes so can’t really help with that.
Certainly MA don’t change the Radius range too often, but don’t be succumbed into thinking that newer speakers released & reviewed more recently are any better.
The Radius range is great for smaller rooms and their Radius 90’s are easy to place on stands or wall mounted. They make excellent rear speakers.
If your room is a little larger, or if you mainly watch movies, I’d go for R270 + Silver centre OR full MA Silver range.
Finally, talking subwoofers, I wouldn’t buy the standard MA subwoofer. Your money would be better spent buying a BK or SVS subwoofer for the same money.
So give us a little more info, and we can narrow things down a bit. One final bit of advice: please don’t buy blind. At some point, get yourself down to a dealer and book a demo. It’s your taste that counts because it’s your money!