We suggest purchasing one type of base for both presses, so that your presses will be able to share the same plate. It really comes down to your experience: if you’re a new printer, go with the Deep Relief base. Setting roller height can be a longer adjustment process on platen presses and this base will be more forgiving as you work through this. If you can use a roller gauge in your sleep, and you have experience expertly adjusting your inking rollers on your C&P, go with the Standard Base. The Standard Base’s plates are less expensive per square inch as they are slightly thinner but all plates, when paired with the correct base, equal type high (.918) and that is the most critical factor.