Ok man, basically the biggest one i can afford ,and the r2c is slightly better than the r3,i get it ,i must find them used now, sometimes they comes with great price,i wonder why the R5 got less points than the R3 even if is the bigger model
I'm selling my R2c
but, I'm in USA. Not sure it's economical to ship that far being Kef is an English company. Because I'm sure some will ask, if your use case is movies it's pretty good. My use case is music, in which case I have to roll it off at 150Hz to make it just kinda-sorta OK. I think that's mostly because IMO the center is overemphasized by upmixers, as well as in discreet musical content. But, it is partially the speaker itself.
For fun I replaced it with a KH310 for a few days and the difference was pretty dramatic - better in every way. This is all obviously in my room, my ears, my musical tastes, my Audyssey curve, etc. I would have kept the 310 in place but low WAF in general, plus "it doesn't match the rest of them." (R5+R3+R11)
On that note, because you're in EU my vote would be 3x KH310 b-stock if you can support the horizontal orientation and potentially off-center center placement. VAT may push it over budget but I've seen pairs on Studiocare for $3300. 3x R3 would probably be equally good; since you have to buy them in pairs you could use the spare as mono surround back? Depends on your source - you mention Dirac, is it miniDSP, HTPC, new Onkyo/Pioneer AVR?
I gravitate more towards three R2c because its sealed design will make it easier to integrate it with a subwoofer and should provide the most output below 100Hz too.
Erin made a video on that, in some small part because I sent him the R2C with that specific use case in mind. IIRC 3x R3 are better in pretty much every way, except of course you can't buy 3. If OP truly wants to hit reference level at 3m, which I agree may not be the case once he (and his neighbors if apartment scenario) hears how loud that really is, R2c below 80Hz will chew up an AVR amp.
Not sure how being sealed helps with sub integration? I've never heard that before; any reading you can recommend on the topic?