Shoddy Pad Insulation Alternative

Is there a good alternative to the shoddy pad insulation under the dash? I found the replacement stuff from DMT but I don't want to go back with that stuff(price is not the reason). I get more than likely no one will ever remove whatever insulation I replace it with but there has to be a better alternative. This car is not a concurs restoration, I want it to be a nice fun driver and I live in the Dallas, TX area. Will any adhesive backed foam type heat/sound insulation work(think dynomat style)? If you have any first hand experience, I'd love to hear it. Car is a 70 Dodge Dart Swinger factory A/C car. Thanks in advance!