How should I chose a manual focusing screen for my Pentax K10D?

Question

I am considering buying a split focusing screen, replacing the original one. I would like to use some split/microprism screen to ease the focusing of the manual lenses. I own both kit lenses (18-55, 50-200) and two primes (50/1.7, 28/2.8).

I found three solutions for the problem:

1. Katzeye — this is the best one, although its quite expensive
2. focusingscreen.com — acceptable price, looks good
3. some cheap screen from Ebay — no quality info

My main problem is that I would like to use it with both kit and manual lenses and I read that some of the screens have problems with autofocusing lenses.

Katzeye works fine although it's quite expensive.

Focunsignscreen.com screens also looks fine, but I could find any info about it.

So in general I would like to get some basic opinions, experiences about focusing screens on K10d, mainly about the focusingscreen.com type.

Answer

On the installation instructions at: http://www.focusingscreen.com/work/k7en.htm there is the statement:

Penatx [sic] ISTD/K7/K10D/K20D change focusingscreen will not influence AF-Focus and focus point operate.

So it seems to be working with autofocus.

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