I have both the Hsu and Infinity speakers. They are both good, but if I had to keep one, I'll take the Hsus. They can stay clean at louder levels, and they aren't as fatiguing to listen to for long periods. The Primus have a bit more detailed treble though, but weaker bass. If you set the Hsus up right, they have a nice big wide sound stage.
One way to make your money go far is with kits. There are some great affordable kits out there which are very easy and simple to put together and whose performance will surpass anything at the same price point. Here is one very high performance and very low cost speaker: Zaph 5.3
and the 5.3 center
. The measured performance on those things are just excellent, and assembly would be a cinch. Also check out some of the kits on this page
. Many of those would be excellent for the price.
A terrific speaker setup would be three of these curved gloss black speakers
for your front stage. They look gorgeous and will have terrific performance. Assembly is very easy, just watch the video on the product page. You don't need any fancy tools, and it would take maybe an hour at the most, it is not a big project to put those together.
You can get some great subwoofer kits as well. Check this sub
out. With that kit, you get two high quality drivers, a nice beefy amp, and a very inert cabinet. Nothing under $1k will beat that. The sound quality would be just terrific. Again, don't be put off by a tiny bit of assembly, it's very easy to put together.
There are other, much higher bang for the buck speaker and subwoofer projects than those, but they are a lot more involved in construction. The ones I listed above are very easy kits and can't really be considered DIY projects. However, if you have a little bit of woodworking skills and have the necessary tools to put cabinets together, you can have something better than any of those, and tremendously better than any finished speaker or sub of the same price. That's something to think about if you intend to keep this stuff with you for a long time. If you are interested in that, I can point you to other projects or you can take a look around the DIY section