I have intricate Memory Box Dies and LOVE them... I stopped using my bug for them as the "presses" stretch out and then don't give an even pressure, so I only use my bug for embossing folders. I used my BS Express. Works like a champ and no shims. I do know that my LSS warned me about the fancy tree one I got last year as some people were having issues with just the right sandwich... LUCKILY/SURPISINGLY it worked first time through... I'm kind of a schlep rock!
Ellen Hutson is an AWESOME place to buy from!