Amandarae,
Congratulations you lucky dog! I have an OL Silver, a Shelter and S&B transformers just waiting for my Teres to show up. As you say, it's wonderful to find such performance at this price point. Are you going to try TWL's HiFi mod on your OL arm?
Regarding saving up for a Shelter, all I can say is roll those pennies as fast as you can. While waiting for the Teres I set mine up on the old rig. It's absolutely amazing. The Shelter 901 may be a micron or two on the cool side of neutral (I'm hoping the Teres will address this) but its detail retrieval, dynamics, control and unlimited response at both frequency extremes are just jaw-dropping. It will knock you off your chair during the wildest orchestral/choral crescendos without breaking a sweat, yet in the next bar you'll hear the 3rd echo off a side wall or someone in the back row take a breath. It's just shocking. Depending on the type of music you like, the 501 may be as good or even better at half the cost. Great stuff.
Agaffer, if you just got your 265, mine should be coming any day! (Do you know what number yours was out of the twelve Chris Brady received in late July? I'm expecting #10.)
BTW, I believe Chris's current belt recommendation is a silk thread. Wasn't the tape idea supplanted by this?