I think out of 5, I will rate 3. Actually it's 4 but due to some misunderstanding, I paid about RM500 for this speaker including shipping to Miri. And this is the main reason feel guilty is because IMO, over RM500 I will opt for hifi speaker. I know others will not agree. I won't describe too much about R1900Tiii because I just received her yesterday, so I think not yet fully burn in. For conclusion, R1900Tiii is good enough for me. The bass is on the same level with my ear, rather than placing subwoofer below desk. And since I venture into headfi, I spend less time for gaming so I appreciate accurate tight bass more than a house shaking powerful bass. In other word, my ear being picky so, gaming headphone and speaker suddenly sound bad. BTW, I'm powering this lady from my UD100.

I listened to C3 previously in a PC shop and I would get this if I can turn back time because it's way cheaper than SP2500. However the bass not as rumbling as Logitech Z623 which I dislike. C3 excellent in midrange but a bit bright and thin when compared to my SP2500. C3 excellent in music more than gaming and movie, and best bang for buck. But I admit, when watching movie or playing game, extra boom form the sub is a good thing. My testing source is phone and DAP along with improper set up and placement. What I like about C3 is appropriate price, medium size sub, and the best clarity within similar price or level for speakers that I ever heard.

Corsair SP2500 however better in gaming and movie due to the bigger sub and warmer sound from the satellite. I will say better treble than C3 but the speaker sub damn huge. About 20kg total man! Served me well when I gaming a lot last time, and sound more 3D like which make me confuse of the sound source, either it's my game or movie, or the noise from outside my house. Source is UD100. Another good thing about Corsair is the satellite doesn't distort or breaking when you blast it. I did once tried to max the volume but unlike other cheap speaker that I tried, I afraid that I will damage the tweeter etc. And, got a lot of EQ and program on the control pod. I know you're not interested but just sharing.

E25, I don't mean to look down the speaker but from most what I read, 4" driver often not enough power for bass. I like the size factor and the design but, as for me it's the bluetooth and wireless function that make the speaker pricey. I never try this speaker yet but just my 2 cent. Judging from Harman Kardon soundstick iii wired vs wireless version. I may be wrong so it's up to your ears to decide mate. Always listen if you can. As for me, I fully depend on review, and luck. Please share with us if you got the chance to try this sexy lady.

I'm surprised you say R2700 disappointed you because my judgement is they might be tad below R2800. My initial plan is to get R2800 but they're over my budget and too large for my desk. If your darling kill you for buying large speaker, tell her speaker is like butt or boobs. Hahaha... M50W, I think on par with my SP2500 but a bit better midrange than my SP2500. Sound thinner but less harsh, the bass is more tight but not really powerful. But, I hate the placement of the bass adjuster which is at the sub. And I will place the sub below my desk, and I'm the type that often change the treble and bass position according to the music type and mood. Some say better than SP2500, some say the other.

If you read at this thread, someone claim R1900Tiii better than D1010. Perhaps due to the bigger driver size, 4" vs 5". For D1080, the main reason I don't buy them because over my budget as I told previously. And, I believe wood body often better than PVC body in sound business. R1900Tiii are much heavier than D1080v. Well, keep in mind wood or heavy size doesn't make R1900Tiii is better than D1080v. This is just my judgement. Sometime, light speaker with PVC casing will sound better than poor technology speaker with cheap wood material. So, I hope you can help me to clear the puzzle too because I want to try D1080v if I was given chance.