Rebbi,
Good to hear back from you. What a great move on the amplifier - I am pretty sure the Unico will be a great match for the Arros.
Mapman and others are right on with their advice about placement - when I first heard the Arros disappear into the room, they were three to four feet from the front wall and toed in a bit if I recall. before sweating further over exact placement, I would let them run for the prescribed 150 hours to allow the drivers to loosed up and provide most of what you are going to be hearing for the life of the speakers. I think added hours will provide more air around the hi end and more authority to the low end. Once they are broken in, I would add the suggested steel shot or sand to the cabinet and then move them around to get the optimal placement for imaging, bass reinforcement and WAF (sounds backwards, but you want the ballast in before determining final resting place).
As for wires - the Arro system I heard that sounded just terrific had Musical Fidelity electronics, Audioquest Diamondback interconnects and mid grade Audioquest speaker wires. This is funny because while I own Diamondbacks I do not think of them as the soundstage champs - resolution, precise instrument placement, tone and "air" yes. Soundstage breadth and depth, not terrible but not the best I have ever heard on mere mortal speakers. I think the Arros disappear so well, this was really not a problem, and they benefited from the positive virtues of the Diamondbacks. Unfortunately, these cables are no longer the bargain they were and have basically doubled in price over the last year. You might be able to find some used for under $100. I also use Audioquest Type 4 bulk speaker cables which sound really nice for $4/ft. Their sins are mostly of omission rather than coloring the sound one way or the other.
For a screaming deal on discontinued Audioquest products that should perform similar to the Diamondback and better than the Type 4 speaker wire, I would check out HCM Audio http://hcmaudio.com/hcm.asp where you can get both decent 1m interconnects and an 8ft. pair of speaker cables for under $150 total! It took a long time for my Type 4 cables to break in, but then I am running 30 ft. to each speaker(!)
There are many other wires out there that don't cost as much as your amp or speakers but will preform better than the old Monster cables - these are just a couple of modest suggestions.
Good luck and happy listening!
