Sorry for the delay in response. Man that is tough, I think if I am going completely stock then I would probably go with the 100X 18x20. It feel pretty solid in stock with little reason for me to want to add weight, and whatever issues I might have had with launch angle (since I have played a lot of 16x19 type of racquets in recent years) I think would go away with time, and adjusting string gauge (thinner poly and lower tension). That said the feel of the Phantom 100P is really nice, I prefer the feel of it over most racquets on the market. That said I think it needs a bit of help with power, so maybe some weight added to the hoop of the racquet could help with that. There is definitely an easy launch angle, and plenty of access to spin with the Phantom 100P; also nice on the slice but maybe a little less connected feel on those flat forehands compared to the 100X 18x20.
So I guess in terms of solid, the 100X 18x20 is a bit better in stock form, but potential issues for some might be spin/launch angle, and maybe needs a little help opening up the sweet-spot. The Phantom 100P on the other hand has great feel (thin box beam) and easy spin/launch angle, but potential issues could be lacking put-away power, and possibly hard to gauge on hard flat groundstrokes.
Troy, TW