I'm looking for a 7 string soloist, but it is a Master Built option from the custom shop, and Jackson is not currently accepting Master Built orders. Anyone have any experience with the Pro Series SL7Q? How are they compared to the USA Select and custom shop soloists? Also, how is the Korean Floyd Rose FRT-SSO2000 trem? Does it hold up to the 7 string OFR or is it a lower end offering like the special?