I can tell you right now if you can't shoot the 226 you will shoot worse still with the P30L. The trigger(I have the light lem also shot the DA/SA) isn't bad in itself, but you won't mistake it for a match trigger. It's tactile enough that with winter mitts on at -20 I can tell you where the reset on the trigger is, but I can tell you right now it is the most unforgiving handgun I have ever shot.
Here is everything I have tried at least a couple hundred rounds on.
Sig P226. Standard DA/SA (9mm)
Beretta PX4 Storm. Standard DA/SA (9mm)
CZ75B. DA/SA (9mm)
Glock 17. Half cocked DAO (9mm)
Smith & Wesson M&P (9mm & 40S&W)
HK USP DA/SA(9mm) DA/SA(45acp) LEM(45acp)
HK P2000 DA/SA(9mm)
Sig P250 DAO (9mm)
Glock 22 Pre cocked DAO (40S&W)
1911(don't remember make) SA (45acp)
I've also dry fired some other guns, but I won't count those since I haven't actually shot them at all. I have shot the P226, glock 17, USP 45, and CZ75 both before I owned the P30L and reasonably recently on multiple occasions. The better I got with the P30L, the better I got with the rest.
I will be honest if your fundamentals aren't good the pistol will not flatter you, it will shoot all over the place. The P226 and the CZ75 even more so is very forgiving(at least in the 9mm trim that I shot them in), I shot the cz75 first when I had a nasty flinch going(shooting very low left with the P30L) and it would shoot almost bang on with a noticably tighter group. Now that I have cleaned up a bit(long way to go still) my groups with my P30L and CZ75 is very similar(the 5 shot 15 group my P30L test target still smokes both though).
If you are interested in improving as a shooter and want a very reliable pistol, I can absolutely recommend the P30L. Solid gun. If you want a pistol that flatters you, the CZ will do it well. I don't think highly of its reliability or durability, then again I don't own one or have more than a few hundred rounds down the tube of one so I have no hard data to show for it, just what I observed at the range.