Posted: 14/04/2012 at 17:14
To ease your confusion this link might help;
Liquid growmore from memory is a balanced fertiliser 7:7:7, whereas 6X is a high nitrogen fertiliser (6:4:3) and horse manure is a soil improver.
OK it will contain some nutrients but these are immeasureable so I tend to ignore this.
Based on your growing list; Yes I think you should invest in Tomato fertiliser you will need it when your tomatoes, chillies, peppers and Strawberries come into flower and set fruit. The others should not need anything if you have prepared your soil well before planting out.
I hope that helps....Tg