Like the looks of what your instructor was using? Here you can see exactly what we use when we dive.

Mares 6 ft Closed Bottom Delayed Surface Marker Buoy
CA$ 189.24
Halcyon 80-lb (36.3 kg) Lift Bag, closed circuit orange
CA$ 195.23
Mares CYRANO 1.1 70
Our Price: CA$ 495.23 Regular Price: CA$ 520.00
Innovative Scuba Concepts Finger Spool - ABS
CA$ 22.23
Nuvair O2 Quickstick with On/Off Calibration Knob
CA$ 424.24
Innovative Scuba Concepts Super Slate
CA$ 22.95
Shearwater TERIC
CA$ 1,500.25
Mares CRUISE JOURNEY *EOL
Our Price: CA$ 95.88 Regular Price: CA$ 176.23
Zeagle Stiletto,w/inflator, hose and RE valve, X Small
CA$ 944.23