i don't have a business, but currently in my inventory (inventory turnover is pretty high for a non-business tho)
(3) VS Touch (4 friends of mine, incl. myself use it)
(2) Wilson NXT 16 (very popular @ da club)
(3) Wilson Sensation (cheap alternative multi)
(2) Technifibre Ematrix16 (same as above)
(2) Luxillon ALU Power
2 reels of Gosen OG Micro (most popular)
the prentices is the minimum qty.. when 2 items hit minimum qty, i order from TW. (or whenever i like..)