Well now that we know the HD version actually drops loot on multi-click jobs per click, here are the best loot for attack/defense in each category, currently ONLY FOR THE HD IPAD VERSION:
Note that that Double Decker is "strictly better" than the respect based Yamaha Race Bike.
Utility Belt (armor) 14/17
Urban Warfare Vest (armor) 11/20
Double Decker (car) 18/14
Armored Police Truck (car) 4/19
SA58 Carbine (gun) 37/41
SA58 Carbine (gun) 37/41
Kunai (melee) 12/14
S&M Choker (melee) 17/7
And where to find them:
Graveyard Gazebo 5x196 $9000-15000 0.22 (1.12) SA58 Carbine (gun) 37/41
Broadway Cube Theater 6x222 $10800-24000 0.18 (0.81) SA58 Carbine (gun) 37/41
Chinatown Chinatown Bank 10x480 $100000-170000 0.11 (0.23) Armored Police Truck (car) 4/19
Chinatown Teahouse 190 $2500-7500 0.03 (0.16) Armored Police Truck (car) 4/19
Chinatown Vivian Wu 5x300 $15000-45000 0.16 (0.53) S&M Choker (melee) 17/7
Hospitality District Trixie 5x212 $11000-28000 0.2 (0.94) S&M Choker (melee) 17/7
Pier 13 Eugenia Ross 5x285 $15000-50000 0.22 (0.77) S&M Choker (melee) 17/7
Empire Airport Curtis Bowers 6x310 $30000-57000 0.24 (0.77) SA58 Carbine (gun) 37/41
Empire Airport Mike Howard 5x256 $13500-38500 0.16 (0.62) Urban Warfare Vest (armor) 11/20
Empire Airport City Bus 3x215 $14400-30000 0.1 (0.47) Double Decker (car) 18/14
Fairview Brownstone 5x400 $30000-72500 0.18 (0.45) Urban Warfare Vest (armor) 11/20
Little San Juan Blanca Diaz 6x267 $12000-63000 0.2 (0.75) S&M Choker (melee) 17/7
Sewage Plant Waste Treatment Tank 5x290 $3500-3500 0.19 (0.66) Kunai (melee) 12/14
Market Plaza Pharmacy 3x320 $13500-37500 0.17 (0.53) Urban Warfare Vest (armor) 11/20
Market Plaza Boutique 3x210 $7500-24900 0.19 (0.90) SA58 Carbine (gun) 37/41
Empire Central Station Seymour Stone 6x310 $30000-72000 0.18 (0.58) Double Decker (car) 18/14
Empire Central Station Smoke Shop 8x450 $40000-248000 0.22 (0.49) Urban Warfare Vest (armor) 11/20
Army Base Helicopter Gunship 3x188 $10500-30000 0.14 (0.74) Double Decker (car) 18/14
Army Base Captain Garza 6x296 $36000-66000 0.16 (0.54) Utility Belt (armor) 14/17
Army Base Sentry Tower 4x332 $18000-54000 0.22 (0.66) Urban Warfare Vest (armor) 11/20