I am looking to purchase a new HU for my car but I can't decide which one will be the best choice. I recently purchased the JL Audio XR650-CSi speakers as well as the Memphis PR 300.2 amp to power them. Eventually I plan to purchase some combination of subs and an amp to power them as well. I have been looking at the Alpine CDA-9815 as well as the Pioneer Premier DEH-P860MP as well as a few other models from those two companies, however I am having a tough time making a decision. Any advice would be appreciated. Thanks in advance!