Excellent amp, the SLO-100 is easily the best free high gain VST amp I've heard, and sounds close enough to a Soldano as far as I'm concerned. No trouble with unwanted noise, exessive use of CPU or antivirus.
The TF300 is a nice addition, and something you don't see much of in amp sims. It captures the sound of the Laney quite well when hooked up with an external IR loader. Cheap or not, it has a distinctive sound which many find attractive. The pedals are of decent quality, I liked the distortion in particular. The amps are very well done, the cab section could use some more work. The two 4x12 cabs works well with the SLO-100, I don't think the 1×12 Combo does the TF300 justice though.
There is no malware of any kind on our software. OSes may flag it because we don't sign the installer as it will raise our costs. I, as a developer and founder at audiosingularity, assure you that it is 100% safe. We intend to sign it in the future as we are also developing paid stuff. Thanks.