I'm hoping to get my new EA iamp 800 within the next month, and will be looking for a rack bag to go with the unit, either a three space or a 4 space. The iamp won't be very heavy (about 19 lbs IIRC) or very deep, so I don't think I'll have too many restrictions about what kind I'd need to fit the amp in, but I do have a few questions: - Do padded rack bags such as the Protec have any frame to them at all aside from the front rails, or are they just padded bags attached to the rails? - Those you own and use padded bags, what options are out there (i.e. - brands, feature, etc.)? If you own one, all reviews would be helpful. - Any troubles with the shoulder straps breaking? Are they trustworthy? - Last, and this has nothing to do with rack bags at all, what is the general consensus on the need for a power conditioner or voltage regulator for digital switching amps? Yea, nay, or "it depends"? Hope this was the right forum to post this in! Thanks in advance.