Love this series, what DVDs should I get ?

I've watched almost EVERY B+W years episode, Simon Templar is such a great, meaningful character, such an appealing heroic character, to me, not to mention charasmatic.

So I watched all the B+W episodes right up to that episode where:

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"There is this couple who (as it turns out) are ripping people off. One of them is the church lady who takes the money, then the one who got "played for a fool" reports it to an officer of the law , who takes the money and the accused, only for it to transpire that HE is in league with her !

So Simon catches up with them, embarks on an elaborate plan which unfolds before us, and longstory short he takes all their money off them and they end up realising they will have to work for it , from now on, doing GOOD, HONEST WORK. ;) "._______

So how many more B+W episodes are there ? What DVD boxset should I get, there are so many ! Thanks for reading.