craypot suggestions

 Hey guys,

getting back into craypots after many years out and just wondering best recommendations for type of pot.

Im using a 5.6 mtr hydrofield so fair bit of space but no tipper or winch at this stage.

should i buy new or just hang out for 2nd hand and should i go fullsize or will 3/4 do the job?

Also any improvements of the plastic pot in recent years or are they still inferior catchers??

would appreciate all experience and opinions.

cheers

Rob