I shoot daily, and one to three times a week 1 or 2 of my buddies come over and shoot. I have Rhineharts, Delta Mckenzie, and Glendel 3D targets. I also have a 48" X 48" 5 insert 365 target, the SEVR Block target, a Block Target, Bull Dog target, and various other bag targets.
The 365 target is the best of all of them, The Rhinehart Signature/Competition series targets are the best of the 3D targets by far. The SEVR has been the best Block Style target. and the Bull Dog (field tips only) is the best indoor target for paper tuning and chrono etc. 2 finger pull out.
I must say also, the Glendal buck is a good target and replacing the core is cheap. Out of all my targets I'd say that one gets shot the most and after 2.5 years I've only replaced the core 1 time.