I note I also run a cap-upgraded Stratos and Tempest combo, w/Groneberg ICs and speaker cables. I like the Jolida JD-100, with a cryoed Chris VenHaus Flavor 1 PC and a pair of JHS Gold Label Sylvania 5751WA triple mica black plates.

The Sylvanias will provide plenty of warmth, detail, 3-D imaging, soundstaging, etc., but they're pricey, getting harder to find, and will push you past your price point. You may want to consider a used JD-100 from AudioGon or elsewhere, and put the savings into tube rolling. [FYI - the cryoed VenHaus Flavor 2 PC pairs nicely with the Stratos, esp. if you're running the Stratos straight out of the wall. I also use a cryoed VenHaus Flavor 2 PC with the Tempest. Additionally, I imagine, if you're living off post, you need a pretty hefty transformer to run current to the Stratos!]
FYI - I also use Walker SST, and
strongly advocate use of that product prior and subsequent to changing any gear, so you can more fully appreciate the effects of your components. Yes, I Walkered the 5751 pin contacts, PC/IEC/RCAs, ditto with Stratos and Tempest, etc., really made the Jolida come even more alive in so many ways.
Furthermore, I second the comments regarding the Tempest's MM/MC stage, Klaus has done a great job there as well, IMHO.
Where are you at in Germany? During my time with US Army Artillery, I was stationed in Giessen (not too far from Wiesbaden) for three years, lived off-post in a small town known as Fernwald-Steinbach. Best of luck with your search and service time. Been visiting the "houses" in Frankfurt at all? Ein Prosit!