I do it the same way as yoy Cachron. I hate learning solos note for note, first of all it´s pretty hard and than it take´s long long time. Here´s what I do, when I´m learning a more known guitar solo, I keep my stuff down and learn it 95% acurate but when learning shred stuff like Yngwie, than I can´t see a reason why I should play note for note when even he don´t do it live. Parts wich are slower in Yngwie solos (the only way to recognize solo from solo in Yngwies songs) are important to learn how they are but when it´s full shred, I throw in my own fav. speed stuff (i got some licks wich I love) and shred it as fast as he does. What´s important that it´s same key (of course).

But than when it comes to Dream Theater solos, I learn them aprox 80-90% as they are ´cause it ain´t always 4/4 and it´s hard to do somthing right (improvise) when it´s 9/8.

Listen to Erotomania last solo. I had to learn it almost 100% ´cause the rythms are sick. We (my band) love to play that tune.

I don´t know but I think that it´s important to throw in your own stuff here and there ´cause that´s the only way for me to develop my own style of playng.