Jolida JD100 stock v. modded

I have a JD100 and am considering Underwood's level 1 or 2 mods. I've searched the archives, but it seems that most people buy this unit either stock or fully modded. Therefore, I would be interested in the comments of those who bought the unit stock and later performed the mods. Are the mods a significant upgrade? What are the characteristics of the modded player over the stock player? Would the modded player be done justice in my otherwise modest system? My amp is the Jolida 302b and speakers are Soliloguy 5.0. (See my "system"). FWIW, I'm also considering modding the amp.

Thanks in advance for your comments.