API 550b frequency preferences

Question 1:  The API 550b has the following frequencies available:

Lo freq 30, 40, 50, 100, 200, 300, 400

Lo-mid freq 75, 150, 180, 240, 500, 700, 1k

Hi-mid freq 800, 1k5, 3k, 5k, 8k, 10k, 12k5

Hi freq 2k5, 5k, 7k, 10k, 12k5, 15k, 20k

Now, 6 position switches are a lot easier to obtain in the needed configurations than 7 position switches.
Soooooooo, I need to leave out one frequency in each band, and would like some opinions as to which ones.

Question 2:  If you had to choose, would you rather have a polarity reverse switch, or the bandpass filter like in the 550 and 550a?

Thanks!

Best,
Bruno2000

edit for question #2

bruno2000 said:

Lo freq 30, 40, 50, 100, 200, 300, 400

Click to expand...

Either 30 or 400

Lo-mid freq 75, 150, 180, 240, 500, 700

Click to expand...

75

Hi-mid freq 800, 1k5, 3k, 5k, 8k, 10k, 12k5

Click to expand...

12k5

Hi freq 2k5, 5k, 7k, 10k, 12k5, 15k, 20k

Click to expand...

20k

In fact, the problem is that 6 different frequencies on shelving EQ's is almost redundant, but 12 midrange frequencies (in total) is lacking.

since the high and low are switchable bell/shelf, i'd say get rid of either the lowest or highest of each band. either way, the remaining frequencies still overlap plenty and it would still be a sick EQ. although, losing the 800 and 75 might be a bit of a bummer so maybe ditch 30, 700, 12k5, 2.5k. or maybe ditch 20k and keep 2.5k...oh man!! i don't know! (also, doesn't the 550b also have 1k somewhere? top of the low mid band?).

and i'd vote for the bandpass, or maybe just a high pass.

Lo freq 30 or 40

Lo-mid freq REALLY tough to decide... would it be possible to get rid of both 30 and 40 from the low band and put 75 in their place?

Hi-mid freq 12k5

Hi freq 2k5 (20k is useful for mix buss)

The low mid band is the tricky one in my opinion. All very useful frequencies.
As I said above, I would prefer flexibility in the more audible range of lows from 50 - 100.
50 - 75 -100 at the bottom of the low band would be a great selection.

What about 12 selections per band with stepped q for a non 500 format...???