If you don't go for the B&M its always worth Re-Furbing your standard one!!
My car has only done 60k miles and the gearchange is sweet as a nut becase the components are in GOOD condition.
Stip the assembly apart and replace the bits that look worn...fill it up with grease and the gearchange is very good in my opinion!!
Any car with a 100k mile old assembly will feel sloppy!!