Get the Vestax HandyTrax. JUst as portable as your laptop, built-in speaker, line and headphone output (so you dont have to bother with a phono preamp).
And even if you get rid of your laptop someday, but continue to do digging, you'll wanna keep it.
It does 33 1/3, 45, and 78. But if you do 78's, then Vestax suggests that you buy the 78 needle.
Vestax HandyTrax........................................$120-140
Vestax 78 or 33-45 replacement needle.........$10-20