I am a great believer in Clifton and Lie Nielsen planes (et al) as I have used ones that more affluent friends have and if I were using hand tools for a living these would be my weapons of choice.
Given that my woodworking is more amateur I started out with research and then went searching bootfairs. There really isn't much to lose if you don't pay silly money to tool dealers (you know the sort...the ones with steel wool in their pockets) :wink:
Most of my gems have come from younger couples sadly selling grandpa's tools...you have to be quick (and early) but if you stick to the older Records and Stanleys you can't really go wrong.
As others have said...if you only pay a couple of quid then you have spares if you need them.
I have a beautiful old Record 4 and a 5 which were about a fiver and even an older No.7 which cost me the astronomical amount of £30!
If your eye is not that good take a set square to check the sole for flatness and square with the sides...look for light rust but not too much pitting...old Sweetheart or Crucible blades....and the rarer SS (Stay Set) Records.
I work with my tools so I restore and repaint them....I am not a collector nor a dealer so it is to protect them not to keep originality...
This is my £30 Record SS No.7 she is a darling!
But much more important to me is to ensure that the sole is square to the sides...which this one was...not even a glimmer of light showing!
Until I am in a financial position to maybe check out an LN....I think this one does all I need...shooting fronts and backs for guitars...
If I made tables for a living every day of the week...well it may get upgraded.
Jim