personally i believe those sweet recaros are worth having an alarm. just as an extra deterant for those potential theifs. i had an alarm sitting at home not installed when my recaros got stolen and i was pretty dirty. so from my pov the alarm is worth it and maybe change one or two of your bolts for you seats.

as for types of alarms possibly one with a pager system so if your car does get broken into you will know it. just my two cents.