Recently took the leap and bought a black impact summit - already matched my PB just an 89 at Oakedge but a big result for me there as struggled to top 80+.
I am getting on well with mine, the key though is the rib height it's 16 mm on the Summit and this is the highest, the others are lower and didn't feel right for me or fit me as well.
I have had to pass my MX8 SC3 on for this gun, but this gun fits me well and I have no doubt I will hit big scores with it something the Perazzi and its 10 mm rib would not had got me too (consistently) due to it not suiting me as well. Please note I have always had a head up style and wear glasses so every bit of visibility helps. The extra vision the hi rib gives me really helps my style, but won't suit everyone.
Is it as nice as the Perazzi - no, but the price tag is in another league - when there are more high ribs out there then I may opt. for a gun that will wear better - my Perazzi was old but still a beautiful gun which was commented on every weekend - the CG is not commented on but my scores are starting to be !
For me any high rib gun 16mm + would have had similar results but at sub £3500 prices there is nothing else on the market.
Try and get to a CG test day and try the different rib heights and guns.
Mine sliced my fingers and skeet vest before the sharp edges where rub off ! Being in Engineering I might had put a note on the drawing to "remove sharp edges before paint!"
Hope it helps
Steve