You can get a very close shave with a very mild razor/very sharp blade or an aggressive razor/less sharp blade, in other words you can get a close shave with anything, but to make a good choice you need to know how and why.
I'm just trying to gauge what level you are at as there are numerous combinations, the previous post will lead you to most of the modern OC's available, so what blades have you been using?
Hi there, I would stick with what you have got razor wise & log onto Connaught & get yourself a blade sampler pack. Try each new blade type for two weeks and try not to change anything up while you are trialling them ie prep routine, cream or soap.......
Okay then...get a blade sample pack from here and try them with your existing razor.
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You will certainly notice a difference in performance with most of these blades, the merkur blades are not generally well regarded.
Then have a look through the Shaving help section and tutorials, you might pick up some useful tips, see how you get on.