After some experimenting, I have found what works best for me --2 free wieght exercises followed by a cable exercise and no machines. Some people may not like cables either, but the emphasize the negative part of a rep differently and in a good way IMO.
A sample routine would be:
Narrow Grip bench 4 sets
Skull Crushers 3 sets
Rope Pushdowns 3 sets
Barbell curls (EZ bar or straight bar, whatever you like) 4 sets
DB curls (on an incline if you see fit) 3 sets
Two-arm cable curls 3 sets
My arms grow best with 7-8 reps. So expirement and find what reps are best for you.
As for being bigger and tighter and toned all at the same time... well it takes time -- bulk, cut, bulk, cut, bulk, cut....etc.