wondering if the a3's are suitable for indoor?
like hardwood indoor, like a gym floor, as well as turf

Yes, they are great for indoors. I have used F50+ a3 and Pulse a3 indoors.

i really like the design but no clue about preformence good looks though

the new 7406 a3's are amazing.. if they didn't cost $100 USD, i would buy them... i'm overdue for a new pair of IDs, i've had my sambas 3 years now

the a3s slipp a bit on turff

thats y im gettin the tunits and usin the hg studs for that

I have F50+ a3's and they are great on turf, no slipping problems there. However a little slippery on gym floors.

I've got the white/gold Absolute a3's, and so far, they're great on all the surfaces that I have played on. I have trained on firm ground, and they gave me much more grip than I expected. I have played on turf, and I have had no slipping problems at all, as the tiny blades on the sole of my Absolute a3's definetely grip the turf. And I have played on hardwood, indoor, and while they're not as good as boots made for indoor like Adidas Samba's, I still haven't had any major problems with them.

I would recommend any of the a3's (7406, Absolutes, Tunits.....) to anyone looking to play on firm-to-hard ground, turf, and indoors. a3's are great boots.