Hi John,
Like many of the others, I would choose the SBL-1, given those two devices.
If you are looking for really high performance, take a look at Colin,
G3SBI's "H-mode" mixer. It is described in Chapter 6 of the Sixth Edition
of the Radio Communications Handbook (RSGB).
This is of greater complexity, but offers third-order intercept point
performance above +50 dBm at the input! I haven't built one (yet), but I
know several people who have. It is awesome!
72,
John, K6QQ
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