I am looking to replace my keyboard controller for my home studio (Studiologic 990-XP - motherboard has gone bad) and researching fully weighted, graded action 88 key controllers. I have a classical music background so I am looking for the best authentic acoustic keyboard feel in the $1,000 - $1,500 price range. I have narrowed my serach down to 2 controllers: Casio PX-5S and the Roland A-88. Has anyone here had the opportunity to compare the action and velocity sensitivity between the PX-5S and the Roland A-88? I understand the PX-S5 has triple sensor keybed and the Roland A-88 is not using the keybed with the triple sensor found in is flagship RD800. But in all practicality, will this really make a difference in the real world when we are playing, composing and arranging? I'm also curious if there are any Studiologic 990-XP owners here who have tried the PX-5S and can advise how the action compares between those two keyboards as well. Thanks so much for your input!! - Steve