The 10 Ah pack will deliver about 35 amps before the BMS current limiter kick in. This can be increased slightly, to about 40 amps, by slightly reducing the resistance of the shunt on the BMS (just a matter of applying some more solder to make the shunts a little shorter).
If you really only need 33 amps maximum, then the standard pack will be fine. The specs are on Ping's adverts, if you need confirmation of the ratings. Many have found these packs to be quite conservatively rated in practice.
Jeremy
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