At $14.99 with 4.2 stars from 644 ratings, this camo caliper release is the cheapest product in this comparison by a factor of three and the third most-rated, and it scores 8.2. It is also the only one of the five that publishes the number a buyer most needs: the draw weight it is built for.

The Spot Hogg Wiseguy is a rigid-connection index finger release with a self-reloading hook and a trigger the maker describes as having zero travel, listed at $102.92 against a $120.82 reference price and rated 4.6 from 672 owners. It scores 8.5 and it is the only product in this comparison that publishes a warranty term.

The Scott Archery Quick Shot is a buckle-strap caliper release that carries more owner ratings than anything else in this comparison - 4.5 stars from 766 people - at $44.99, and it scores 8.6 here. It is the pick we would hand a compound archer who wants a known quantity, with one large caveat: the listing publishes almost nothing about the product itself.

Forty-five MK8 nozzles across three alloys plus tweezers, two wrenches, cleaning needles and a brush for $17.99 - the broadest box on this shelf, and the one that never tells you which of its three materials belongs to which filament.

A complete quick-release nozzle assembly for the FLASHFORGE Adventurer 5M at $28.00, rated at 32 cubic millimetres a second and 280 degrees Celsius, reaching 200 degrees in 35 seconds and changeable in three seconds without tools - and the only listing here that publishes a flow rate.

Twenty-four official Creality MK8 brass nozzles in seven diameters from 0.2 mm to 1.0 mm for $8.79, with the size engraved on each body and a published one-year limited cover plus lifetime technical assistance - the only warranty term stated anywhere on this shelf.

A single tungsten carbide MK8 nozzle at $26.39 that publishes four material properties no other listing on this shelf discloses: 9 Mohs hardness, 550 degrees Celsius temperature resistance, 130 W/m.K thermal conductivity and a 4.5 um/m.C expansion coefficient.

Five hardened tool steel MK8 nozzles at 0.4 mm for $8.49, with a stated diameter error under 0.02 mm, rated for abrasive filaments including carbon fibre and fibreglass, and carrying the largest rating count of any nozzle listing in this comparison at 2,186.

A mains balance charger for two-cell and three-cell lithium polymer packs, with an independent charging line per cell, 800 milliamps of balance current and a 1-amp maximum output. A two-colour LED reports charging and full; there is no screen, no storage mode and no discharge function. At the lowest price in this comparison it adds the one function a supplied charger usually lacks.

A 150-watt, 10-amp single-channel charger and discharger for lithium polymer, high-voltage lithium, lithium ion, lithium iron phosphate, nickel and lead acid packs, with twenty stored battery profiles, Deans, Tamiya, JST, EC3 and HiTec leads in the box, updatable firmware and FCC and RoHS marks. Its end voltage is adjustable from 3.85 to 4.3 volts per cell, a control the listing marks for experts.

A dual-channel programmable charger rated 200 watts on the mains and 325 watts on DC, with a 15-amp ceiling, XT60 leads, a large IPS colour screen and nine named protections. It covers lithium polymer, high-voltage lithium, lithium iron phosphate and lithium ion to six cells, nickel chemistries to sixteen and lead acid to 24 volts. Its listing does not mention storage charging anywhere.

A six-port charger and discharger for single-cell lithium polymer packs, running 0.3 to 1.3 amps per channel over USB Type-C, XT60 or DC, with a colour LCD and a selectable target voltage in both directions. Its published output voltage of 3.8 V is the storage voltage, which makes it the only charger in this comparison to state the figure the category is sold on.