I have to say I've never used anything but a frame pump in over 50 years. I now use a mini frame pump on the road and a decent full size frame pump at home. I don't race, and I have no idea what pressure the tyres are. I just pump until the tyre feels hard enough to me. This isn't very scientific but has always allowed me to finish my ride at wharever speed I want. By all means buy a decent pump and pressure gauge if you need to know you're riding on correctly inflated tyres, but what is the correct pressure? Surely it depends on the sort of roads/terrain you're riding on, and what about the weight of the bike or rider? Is there a chart that gives you the correct pressure for all variables? I sometimes think that it's too easy to get hung up over "experts" iron rules, cycling is fun - well it is to me... just my two pence worth ;-)