The master race is open shooters, of any flavor. You are one of us.
Heavy vs light is really the crux of the argument here. I have never shot a heavy gun, how would you say it compares to a light gun in feel?
They feel softer, less harsh, thats the major diff,
Less smack in the palm when shooting,
The SVI IMM, eventhough pretty short, titanium mount, comp, rts2, it has some weight due to SS grip. imho this is a very good middle compromise. For ipsc I'd probably do heavier, for just a steel match, I'd go lighter
As for what is right. light or heavy, a personal feel thing, I have lots of friends going heavy, lots going light, some going short etc. some loading the the limit of the case, some loading soft and rather have the gun live long and the minute ekstra lift. all of theese guys have GM ipsc rating and are experienced shooters.
Its like when your loading ammo and increasing powder weight, when yo hit a certain limit, it becomes violent, not any flatter really
When you say shoot slow on a 30 yard target, or 60 yard, or up close and this and that on training, its more of a difference, at a match and when your head is in matchmode, it doesnt matter. its training, timing, experience.
Gun has to work 100% all the time, your equpment has to be good, you cant be racking every now and then, I have racked two times during 2016, one was was at open nationals, prematch, sub zero temp, limp wristed like a idiot going strong hand in prematch with my mind somewhere else. Other was a bad primer (I kept round and tried 5 times more after) at small level 2 match, its my first bad primer in ages, we are talking 100.000 interval. If your gun stops from time to time and you dont trust it, its no bueno your head and mental state wont be good.
Gun has to be SMOOTH, no jolting no hickups no nothing, this can slow down the slide sufficiently enough to not beeing able to do that superfast doubletap upclose, or even worse, not chamber and cause a malfunction, when you cock the hammer, pull the slide back and let it go, it gotto chamber that round perfect, no banging on the slide to get past the disconnector or anything stupid,
Hitting shit, you cant be horrible and not hit far away targets, or get poor scoring, if you start by dropping a popper at 50 yards, paper at 60 yards, you gotto be like.. no stress I got this, I trained, I got a edge on everybody else, then everything else is easy. You have to be able to run 90-95% alfa if you want to, and be aware of the gain when dropping c's, when you get the c's it has to be a calculated thing, and you know at this stage it will be faster, but of course, always try to get the A.
Grip technique, this is important, imho its another technique than then a non comped gun, its a more even hold for up down as you fight less recoil, but you fight slide going forward, you gotto grip HARD and even if you slap the trigger you shouldnt be off. Im experementing with new grips and magwells now to increase the control even further, been shooting SS scott skate grip mostly in open so far, but I used to shoot signature SS skate, will buy a few to try on the "development" gun, including PT evo I hope, of course this is also a personal thing, ref handsize etc
To sum it up, its about personal preference more than a specific gun. Whatever you get, just make sure it runs a 100% and you train a lot, also including dry fire.
At a stand and blast stage, I have no issues keeping up "the best", its the movement thats the hard part when you getting master/gm level. Every step is planned, every acceleration, deacceleration, every twist and turn of the body.