I think one could start by recognising what is not going to work. The marketers and the adverts have already been mentioned.
But I think it is equally unlikely to succeed if one just picks an off-the-shelf, oven-ready method where one does not understand the role or characteristics of the components and all one supposedly has to do to act when the “red crosses the blue” or it closes over or under this, that, or the other - and then regularly jump from one to another with whatever comes through the “letterbox” next, There are millions of these types of packages that one could spend an entire lifetime exploring - and an entire fortune “testing”.
Personally, I think the best way to approach this question is, instead of trying to rate the providers, to first draw a profile of oneself as to what kind of trader one wants to be and what circumstances limit or enhance one’s opportunities.
In my opinion, the forex market is simultaneously very complex and very simple! As a retail trader all we are really concerned with is that the price will either move up or it will move down. The harder bit is finding a means of identifying which of these directions is most likely, when it has started, and when it will end - and how much of the moves we want to capture!
As such, I think one can do a lot to shape and personalise one’s search for a suitable methodogy by firstly establishing some personal restrictions, limitations, essentials, requirements, desires, etc. and starting with something that fits that template, for example:
- automated or manual
- mechanical or discretionary
- TA PA or FA or a hybrid
- Intraday or swing or long term
- trade volume
- equity available
- range of products
- charting timeframe (there is only one price stream - what arbitrary time capsules do we want, 5m, 1H, 4H daily etc)
- fixed targets or trailing exits
Many of these can then be further subdivided. E.g. what type of PA or TA tools fit one’s criteria and seem to have credibility in achieving price move analysis.
Having drawn up such a personal profile then look for (or create) a basic method that fits and start with that. Give it a suitable opportunity to perform until it is possible to identify what is good and what is wrong or useless or superfluous, what is missing, what can be adjusted, etc. It is worth remembering that market characteristics do change and movements are never nicely cyclical and therefore no method always fits everything.
I don’t think there is really a quick fix answer to this process. It takes its own time, but the experience and systematic development, as well as the success at the end of it, is in itself part of the pleasure and sense of fulfilment that one can gain from being a trader.
Edited to add:
Often, it is not the components of a method that are so very critical to its success. Even a mediocre method can work if the trader is “right”. I think success or failure is far more a question of the trader’s psychology and skill than the structure of the method. Typical issues here are failing to close losers, failing to let winners run, fear, greed and all those other super emotions
This reminds me of that old cliché that when you point a finger at a method and ask does this work - the other three fingers are pointing at you with the same question!