I am going to buy ZLIN 143- can you advise me something?
Well, if you have made up your mind, don't ask.
However if you have a bend that way a PA-28 type is probably a third the price.
If you want the option of aerobatics, you can't really compare this aircraft with The Trener Master. (Zlin 326). You're talking lots of money for a mediocre heap of aluminium in a 143.
I should qualify that by saying I have flown both my suggestions and only looked with disinterest at your choice.
Good luck either way.