[Velvet Wafer]

um... the V Series and the V+ Series are completly different SSD Series.
The 32,64,128gb V Series have an improved Jmicron controller with more cache, and tweaked firmware from Toshiba, but as OS drive they still seem to lag.
(except the 40gb variant, its a rebagded intel X25-X,which is essentially a X25-M, with half of the Flash Channels used)

the V+ Series features a Samsung controller.. i cant say anything to their performance, just that theyre not the fastest... can also be, that they also feature OS lag.

I would recommend you an SSD with either an Intel or Indillinx Controller

for Example:
A-Data S592S
A-Data SX95
all other A-Data drives feature Jmicron, and the SX94 and also probably the SX 93 feature a Dual Jmicron controller. improves speed, but still doesnt kill the OS lag wholly, from what i have heard.

i would you recommend one of these drives:
Crucial CT128M225
Gskill Falcon I and Falcon II (second sports 34nm intel flash IC´s)
Intel X25-M
Intel X25-M G2
Intel X25-E
SSDNow E Series (rebaged X25-E)
SSDNow M Series (rebadged X25-M)
OCZ Agility
OCZ Agility EX
OCZ Vertex
OCZ Vertex Turbo
OCZ Vertex
Patriot Torqx
Runcore Pro IV
Solidata K5
Solidata K6
Supertalent Ultradrive GX (former LE and ME) with either SLC or MLC

These are all equipped with Indillinx Controllers or Intel controllers. Only the drives i posted here, that i marked as "X25" or "X25 rebadged" feature the Intel controller.

if you have the money,and availability i would suggest you the Solidata SSDs, they seem to be quite a bit faster than ordinary Indilinx SSD.
I personally bought the Ultradrive, and im very pleased with its performance!