Maybe some of ScyTek products are good, but even then, why buy from a terrible company that won't return emails or phone calls.
I have the Galaxy 5000RS installed, not the 5100. Anyways. I have now had the alarm installed for about a month. And I don't like it. The range is just the worst I have ever had, completely useless for remote start away from home.
And the alarm is inconsistent. I set it for RPM sensing. 1 because RPM sensing claims to be the most reliable way to start the car, yet in this mode it almost never starts on the first try. 2, I wanted it to lock the doors based on RPMs so it doesn't lock right away since passengers often don't have the doors shut before it locks which means the door unlocks when it shuts because as an import is has lame "hold the door handle up" to keep them manually locked. Import owners will know what I am talking about. Anyways, it's not consistent for the door locking, it should only lock based on RPM. But instead sometimes it locks right away as if in the ignition lock mode, sometimes it does it based on RPM and sometimes it does both which is annoying to have it double lock like that.
Also, with the remote start, if it doesn't start the first try it takes forever between cycles. I think about 30 secs between cycles. Doesn't sound like a long time, but trust me, sit there for 30sec waiting for it to try again is forever. My other remote start retrys in about 5 sec and it didn't even have RPM sensing. Seems if it's using RPM sensing it should try cranking for at least 6-10 secs before giving up and then it should be able to see it's not started and retry within 5 secs not 30 sec.
$70 is cheap, but upset because for just $20 more I could have gotten the same alarm I was used to, and from a company that actually replies to emails and phone calls. Scytek in California will not reply to my emails and never calls me back on the phone.
Pro:
CHEAP and does work, but see the CONs.
Cons:
COMPANY IS UNPROFESSIONAL, won't call back or reply to emails, not once even.
Terrible remote range (like 50 feet on a good day)
Remote is slow to react (feel like I have to constantly press buttons)
Remote start is unreliable and has no config options other than RPM sensing or Auto.
Remote start cycle times are way too way apart.
RPM sensing mode gives buggy door locking results
So don't buy this alarm. I wish Someone else had mentioned these things, I would have stayed clear. At least it's just my GEO and was only $70 shipped. $90 plus shipping for either of the 2 alarms at 12voltshop.com (Canada) is a much better deal. They reply quickly, are very friendly and helpful. Their alarms are at least configurable, like crank times, etc. And most of all, their products are not buggy like ScyTek. And they are a great company with great prices.
Another note, even my ScyTek Galaxy 5000RS box that said 2003 on it, looked old as if sitting on a shelf since 2003. Avoid ScyTek.