I have built more than twenty Anniversary based Bachmann ‘bashes’ from 0-6-0 switchers, 4-4-0, 2-8-0, 4-6-2 to 4-8-0, 4-8-2 and a 4-4-4-0. These were all built from either newly purchased locomotives or from new spare parts. In every case the locomotives have been fitted with supplemental tender wheel pickups to aid power pickup reliability. I have never had a pilot truck derailment (except one case, from the factory, whereby the pilot wheelsets were hopelessly undergauge and derailed on a frog). All locomotives have performed faultlessly after rebuilding, but then I am very particular how I assemble my locomotives.
Unlike Terry, I and many on the Bachmann forum, have had valve gear problems, with the valve gear simply disassembling itself in operation. When rebuilding my bashes I bond the offending mount screws and have so far not had a problem after rebuilding. I have yet to receive an Anniversary that did not have QC issues. It is mainly problems associated with numerous parts liberating themselves in the original factory package on arrival. However, cabs broken in transit and domes loose in the packaging are not uncommon. I had one case whereby the locomotive simply would not run and actually shorted out my power unit. I disassembled and found the tender light wiring, in the locomotive, pinched under the cast weight block so that exposed/cut wires were shorting out through the metal ballast weight. I always dispose of the smoke unit so cannot comment on its reliability. The loco is a good basis to rebuild to something more reliable. With over twenty Anniversary purchases, I believe that I am competent to comment on factory build quality.
The Aristo-Craft C-16 (non tooth belt drive) fares little better in so far as potential problems and also suffers from occasional QC lapses plus transit/delivery issues, such as split boilers (I have received two with boilers cracked completely through the moulding. I reported the problem and apparently I am the only purchaser ever to receive a locomotive with a cracked boiler and yet I received two such locomotives). Other problems are domes separating from the boiler, detail parts falling/breaking off and cabs either broken away from their bases or decorative cab sidepanels distorted/separated from the cab. Notorious on the damage on arrival list are the fragile side running boards on the boiler. The mounts are too fragile and break through at the front edge. The tender has power pickups, but the roughly cast standard tender wheels are not reliable conductors. I have twelve C-16 and have seen many QC/delivery problems. Mechanical reliability has not been an issue with me, but many have had noisy, unreliable drives, with in many cases, the axle shaft gear that meshes with the motor ‘pinion’ gear, spinning loosely on its shaft. The new tooth belt drive dispenses with this gear train and also uses ‘prime mover’ gearboxes and thus far does not seem to have any reported running issues, apart from numerous comments on the reliability of the smoke unit. On my locomotives smoke is not an issue and I remove the unit. Apart from QC issues, the loco is a favourite of mine and I feel that I have enough of them to comment on reliability/performance.
I would purchase an Anniversary if I was going to rebuild/bash it, or an Aristo if I wanted a loco to run straight out of the box. As suggested earlier, my recommendation is a superceded non tooth belt drive Aristo C-16 available new online on eBay for around $120. The newly released tooth belt drive chassis has caused demand for the older new old stock models to decline, with resultant lower purchase prices. Prior to the release, these were selling anywhere from $150 upwards, with the relatively rare bumble bee, attracting prices generally over $200. The newly released model is good value at around $250.00. The newly released model is better finished/better paint schemes and has the drive lowered back to its prototypical height. When Aristo retooled the original Delton drive, post 2000, they raised the drive by 0.250", giving the loco an unusual stance. The newly released drive addressed this issue and the axles are now back at a prototypical height in relation to the cylinders, giving a more realistic look to the model.