I use both and have good luck with both of them. However most of my work is in michigan so i use dsi for all of my directv orders however use p10 for all my small parts. Also they both do ship throughout the us. Its up to you. I have good relationship with my rep here at dsi. That help big time. Also dsi has all my equipment to me the next day verses p10 its about 3 days.
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