The TM MK23 is probably the best fit for you. They "can" be upgraded to do some pretty mental stuff but a stock TM Mk23 is very quiet and will happily flick a 28 at least 30 metres without any fuss.
When you start looking at clones, STTi, ASG and Novi - They are that, a "clone" and for the most part, genuinely all the same gun. I wouldn't brand Novi stuff as "bad" more that it's sold as "ready" out the box and people get miffed if they need to do anything, he sells box loads so there will always be bad feedback flying around compared to those qho quietly buy an STTi for £40 and expect a long build up.
I'v personally had 3 STTi's, an ASG and have finally settled on a TM. I've done some mods, Hadron TDC, flamingo bucking, SBA suppressor and removed the 2 stage sear and I'm very happy with it as it is ultimately "just" a sidearm backup pistol.