I can't think of any solo that I don't like. Although, I'm not a musician--I'm just a music fan, so they all seem amazing to me because I could never do it myself. That could explain it. Yes some stand out as being more jaw dropping than others.
Also, I'm a fan of musicians putting their own stamp/spin/take on whatever they play so while I dig the original solos from former players I really enjoy JR injecting his personal flair on whatever he plays. It's just his way and I like it!
On this forum I hear a great deal of negativity for 'wankery', long solos, too many unisons, too many solo trade offs, to long of songs, not concise enough, shredding, too much metal, not enough metal, too many ballads, etc. etc. Which is all fine, of course. We all have our own tastes but may I suggest, some should probably find a different band to follow because I don't think DT is changing any time soon.