Posted: 09/05/2014 at 17:07
Moneymaker has a clue in the name - it's bred to give a big yield but isn't great for flavour. Marmande is French and might not do as well in the UK as it would in France. Never heard of Harzfeuer.
You can grow from seeds taken from a tomato, but it's useful to know what it is, whether it's an F1 hybrid (which won't breed true), whether it will do well outdoors, and whether it's an upright (indeterminate) or bush type (determinate). Without this information you could waste a lot of time, effort, compost, feed, etc on the wrong sort of plant or grwoing it the wrong way.
For outdoor tomatoes, I have found Sungold superb for flavour - it's an F1 so the seeds are expensive, but most people only want a few plants. I'm also growing Maskotka, a bush-type that's easy to look after.