CC In-boom

1.Do you have an in-boom furling mainsail system on your boat? 
2.If yes, how do you rate it?
3.If yes, would you recommend your system to other cruisers?
4.If yes, please comment on what you like and dislike about your in-boom system. 
5.If no, are you considering up-grading to an in-boom system on you boat?