Congrats on your new toy. I'm still loving mine after 3 years. Not quite sure if it's possible for you to try the DAPs before you buy them, but that's what I'd advise. Money is not easy to come by after all.Between a DX90 and Calyx M, personally I'd go with the M. Tonality wise, it's much meatier and lusher in presentation, yet details are still forthcoming. I'm currently using DX100, while my wife is having the DX90. Alternatively, do give HM-802 a try if you can do.