Many people like Crucial, but I've had good luck with them, Corsair, PQI, and most Kingston.

To swiftly answer your question, today, there is no best brand of ram. There are many companies all offering good models. To decide what ram to buy, you should know what type of memory your motherboard supports. Here are some rough guidelines as far as memory is concerned... When getting RAM the first thing you should have in mind is lifetime warranty. There are many manufacturers that offer lifetime warranty. KINGSTON SUPERTALENT CRUCIAL CORSAIR OCZ etc. They all have good memory models. Another thing you should have in mind is memory timing : the lower the better. Lower timing means better quality in memory. It does not necessarily guarantee superior performance under normal operating conditions. Better performance is achieved under special conditions, providing the motherboard supports it. For example, "OCZ EL PC2-5400 DDR2 GOLD 1GB GX XTC DC" is a DDR2 PC2-5400 / 667 MHz / 240 Pin (Dual Channel)memory with the following timings : 4-4-4-12 (CAS Latency). It is considered a very good memory with good timings. Compared to "KINGSTON KVR667D2N5/1G 1GB PC5300 667MHZ VALUE RAM" it is considered better because it has a CAS Latency of 4 instead of 5 for the Kingston. Caution: Some memories in order To operate consistently at CL 4 memory timing, technology ERR should be supported by the motherboard, with motherboard chipset nForce 590 SLI. Another thing you should have in mind, is the operating frequency of the memory : the higher the better (but it has to be supported by the motherboard).

OCZ has some awesome highend DDR3 RAM. If you want to get the best DDR3 out there, go for the OCZ, it runs at 2000 mhz and has a CAS of 8.

Having in mind that you will be using your PC for audio production, you are going to need plenty of memory : 1 GB (minimum), or 2 GB (recommended). I suggest "KINGSTON KVR400X64C25 512MB PC3200 400MHZ VALUE RAM" which is a 512ΜΒ DDR SDRAM 184-PIN PC3200 400MHz (Double Data Rate 2x200MHz) CAS Latency: 2.5 Standard 64M X 64 Non-ECC 400MHz 184-pin Unbuffered DIMM (SDRAM-DDR, 2.6V, CL2.5, 400mil, TSOP, Double-Sided, Gold) Lifetime guarantee. Get two of these for 1GB total, or if your motherboard supports it get 4 for 2 GB total. In my country it costs 17 euros / piece. If your motherboard supports 1 GB memory modules, I suggest "KINGSTON KVR400X64C3A 1GB PC3200 400MHZ VALUE RAM" which is a 1024ΜΒ DDR SDRAM 184-PIN PC3200 400MHz (Double Data Rate 2x200MHz) CAS Latency: 3 Standard 64M X 64 Non-ECC 400MHz 184-pin Unbuffered DIMM (SDRAM-DDR, 2.6V, CL3, 400mil, TSOP, Double-Sided, Gold)Lifetime guarantee. Get 2 of these for a total of 2 GB. In my country it costs 29 euros per piece.