So... I jumped off into the deep end this morning and pre-ordered an Ibanez BTB7. What are some good recommendations for strings for it? I have been using D'addario XLs on my Ibanez 506 for a while and like the sound. I had some GHS Boomers on my 4 string BTB and did not like them very much. I did recently switch over my 4 string to DR Black Beauties and I really like them a lot. Does DR make the coated strings for a 7 string bass (either individually or in a set)? What are some other recommendations on strings for a 7 string bass? Thanks in advance!