Ok so here's my review of ayu-mi-x 6 -SILVER-...it downloaded first so I decided to listen to it before GOLD. Oh and I'll do an edit for my review on GOLD.
1. GAME X YOJI 4/5 -awesome!
2. Together when... X CO-FUSION 3/5 - This one was pretty cool.
3. No way to say X HIGH CONTRAST 5/5 -This was one of my favs! It's just excellent!
4. alterna X FREEFORM 4/5
5. HEAVEN X DAISHI DANCE 1/5 -I pretty much hated this one lol. I only liked the acoustics in the beginning and that was it. I don't care for the original song as it is.
6. fated X MAKOTO 3/5 - Kind of boring; it was alright.
7. About you X BLACK STROBE 5/5 -another favorite <3
8. decision X FORCE OF NATURE 4/5
9. JEWEL X STEPHANE POMPOUGANAC 5/5
10. CAROLS X PLAYGROUP 4/5
11. part of me X CARL CRAIG 2/5 - I didn't like the way they made her voice sound overly lazy :/...but the end had some coolio percussion
12. walking proud X CALM 4/5 - I changed my mind...I like it alot!
OVERALL: A-
EDIT:
My thoughts on GOLD....
1. STEP you X THE YOUNG PUNX 5/5 - Plain awesome!!!
2. Moments X dj Kentaro 4/5 - This one was pretty cool but it felt kind of long and that random guy was weird.
3. talkin' 2 myself X STONEBRIDGE 4/5 - I really liked this one, but it had some weak points.
4. Beautiful Fighters 2/5 - Mmmm yeah...'nuff said I think xD
5. INSPIRE X ARMAND VAN HELDEN 2/5 - Ummm no comment >.><.< lol
6. Greatful Days X PARA ONE 3/5 - This one started off cool but the weird effects got a little irritating.
7. Startin' X SHINICHI OSAWA 2/5 - Boring
8. glitter X SOUL CENTRAL 2.5/5 - Better than the last but still boring.
9. BLUE BIRD X 7TH GATE 3/5 - I have mixed emotions about this one....
10. ourselves X COLDCUT 4/5 - FINALLY a cool song

lol j/k but I did really like this one.
11. Ladies Night × AFRA & INCREDIBLE BEATBOX BAND 4/5 - Excellent beat and cool effects but I didn't like the cheesy voice they added in.
12. HAPPY ENDING X MAD PROFESSOR 2.5/5 - This one was kind of neat but it was a little too random. This isn't really something I'd find myself listening to often.
OVERALL: C - it was just OK.
I thought SILVER was much better...although GOLD had a cooler cover.
Oh and one other thing, I don't know if this has already been specified or if this is a dumb observation, but I realized the mixes on SILVER had more of a dark sound to them, while GOLD had a glamorous/laid back-like feel to them. Maybe that's why I prefer SILVER lol xD
I really like the dark dance stuff.