Join Date: Feb 2001
Location: London, Ontario, Canada
Lo-TRS-7 is the cheapest, lowest-quality 7-string bridge Ibanez made, the Edge Pro 7 is the new high-quality bridge Ibanez makes.
Lo-trs-7 (lowest quality)
Edge-7 (high quality)
Lo-Pro-7 (high quality)
Edge Pro 7 (high quality)
The Edge and Lo-Pro are equal in terms of quality, but are shaped differently (the "Lo-Pro" being "Low Profile") and therefore respond slightly differently (good or bad is subjective). The new Edge Pro is equal in quality to the Edge and Lo-Pro from what I've heard, other than the studs can cause tuning issues (but those are easily replaced I've heard)