Moving slightly away the original question but keeping with the theme
Coming back to modelling fairly recently after a 40 year gap, the differences are monumental
Paint - is now acrylic not enamel and a seemingly endless variety of colours
Glue - the Tamiya extra thin quick dry is designed to be spread over the top of the seams once the 2 parts have been pressed together, the idea being is the fine glue will infiltrate between the 2 parts and set and any residue will evaporate- this I’ve found to be pretty much the case- it’s handy to have a non quick drying version as well
The models - these are generally much more detailed and more info ie with planes it’s normal to be given the name of the actual pilot
Manufacturers- most have moved towards more detail, new releases are exactly that but quite e few companies just re-release old models Eastern Europe are pretty big with models and quite a lot represent high quality
Decals - used to be around 10 or so for a 1/72 plane, these have dramatically increased and require more planning, a while ago I did a EE Lightning that had 130 decals, tooth picks are a must
P/E - photo etched parts, mostly from Eduard, look at Super Hobby and the bay, these provide that extra detail both inside and out, this puts your model head and shoulders above the rest, although at a price, a £15 model could have another £40 of P/ E parts
Masks - these are available for most canopies, it’s a must fairly easily canopies can have clean cut lines
The masks are also worth buying for complicated camouflage schemes such as the Russian digital
Airfix- used to be just middle of the road in quality, their new releases are top notch
Eduard - especially the profi packs rather than weekend, these are exceptional when it comes to detail
Lyndon