Mainstage Sounds, a new sound design label and the sister site of Alonso Sound recently released a Mainstage Impacts volumes 1 & 2 sample packs. Both of these sample collections provide 500 cinematic slams, epic explosions, sub bomb, etc sounds to add more drama and kick to your music.
In these past few days I have played around with the sounds and I think they are quite nice. Add a bit of saturation and/or use reverse and you triple the possibilities how you can use them.
I made a video to show you some examples how they sound like:
Both of these sample packs contains 500 WAVs at 24 bit 44.1 khz stereo quality and the price is $29 per pack. For more info. audio demos and free samples, check out the links below: