Learn Croatian: Ovaj bežični pisač je bolji, tako da ga svi koristimo. - This wireless printer is better, so we all use it.

It is created by combining the preposition bez (without) and the adjective žični (wired, from žica - wire). When these join, the z assimilates to ž, and the resulting double ž simplifies into a single ž to make it easier to pronounce. This spelling rule is common in Croatian word building.

Could I use pa or zato instead of tako da?

Yes! tako da emphasizes the consequence (so that / as a result). You could easily replace it with pa (and so), which sounds a bit more casual and spoken. If you use zato (for that reason), you would drop the da, and the clitic placement would shift to the second position of the new clause: ...bolji je, zato ga svi koristimo.

Why does the clitic ga come right after tako da?

In Croatian, clitics (short words without their own stress, like ga) must go in the second position of their clause. When a subordinate clause starts with a conjunction like da (or the phrase tako da), that conjunction takes the first spot, so the clitic must latch on directly after it.

Is the verb koristimo imperfective or perfective here?