Johnson suisse is good, but it cost twice or 3 times more than some of the other brands... looking for something cheaper

Orin not bad - very nice design, pricing wise on par with JS

try not to go with syphonic. the exit hole is smaller, makes it hard to clean. sometimes if u use alot of tissues, it can get clogged, and ur stuff may not flush down properly...lulz

wash down still preferable

Main reason why you cant flush your Waste cleanly with syphonic w.c:

1) As the discharge hole is smaller compared to wash down w.c, you need to connect it accurately, cant even senget a bit. Usually if you are using a reliable brand like J.S and you are having this problem, 99% your plumber did not install the W.C accurately.

What do you mean by senget a bit? Doesn't the WC sit on the floor of the toilet? Or are you talking about the piping to the sewage? Sometimes, your sewage pipe outlet (known as the flange) could be too far or too near the wall. You will need to use slightly curved connecting pipes.