Soundblaster was the one I had been considering, but those issues you mentioned are largely what has held me back so far. Had the disc/cassette guys been better, I probably would have bought, but a lack of accuracy and their overall unattractive aesthetics killed them for me. Soundblaster's on my "if I see it while I have money, then maybe" list but his scale makes him a tough sell for my other WFC/FOC figures.
Forgot over the course of this to mention that I also got FoC Soundblaster and the Ratbat/Frenzy two pack to go with him. I was never totally happy with the deluxe WfC Sounwave as I always felt his proportions were slightly off. Soundblaster does not have that issue and I feel it is an all around better figure. The discs, being Legends, are not anything special. I do however like the gimmick because it works (Most of the time). It does suck that the mechanism to push the disks out sticks out so far when you have all three stored in Soundblaster's chest though. There's no way to mount the birds on Sound's arm since there are no hardpoints. That is a bummer but they balance pretty well on his arm regardless. It's not a perfect figure, but is a fun toy with a fun gimmick that usually works for me. Too bad he doesn't come with a gun aside from his shoulder cannon.